/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:44,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:44,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:44,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:44,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:44,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:44,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:44,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:44,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:44,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:44,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:44,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:44,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:44,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:44,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:44,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:44,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:44,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:44,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:44,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:44,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:44,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:44,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:44,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:44,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:44,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:44,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:44,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:44,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:44,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:44,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:44,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:44,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:44,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:44,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:44,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:44,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:44,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:44,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:44,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:44,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:44,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:27:44,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:44,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:44,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:44,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:44,666 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:44,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:44,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:44,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:44,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:44,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:44,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:44,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:44,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:44,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:44,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:44,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:44,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:44,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:44,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:44,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:44,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:44,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:44,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:44,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:44,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:44,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:44,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:44,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:44,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:44,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:27:45,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:45,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:45,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:45,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:45,158 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:45,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 04:27:45,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78a57ab8/59a50b4701d24194aec2d069e7c95ece/FLAG75bdeb7c2 [2020-09-25 04:27:45,913 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:45,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 04:27:45,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78a57ab8/59a50b4701d24194aec2d069e7c95ece/FLAG75bdeb7c2 [2020-09-25 04:27:46,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78a57ab8/59a50b4701d24194aec2d069e7c95ece [2020-09-25 04:27:46,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:46,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:46,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:46,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:46,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:46,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:46,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46, skipping insertion in model container [2020-09-25 04:27:46,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:46,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:46,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:46,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:46,673 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:46,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:46,970 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:46,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46 WrapperNode [2020-09-25 04:27:46,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:46,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:46,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:46,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:46,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:46,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... [2020-09-25 04:27:47,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:47,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:47,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:47,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:47,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:48,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:48,553 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:48,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:48 BoogieIcfgContainer [2020-09-25 04:27:48,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:48,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:48,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:48,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:48,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:46" (1/3) ... [2020-09-25 04:27:48,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:48, skipping insertion in model container [2020-09-25 04:27:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:46" (2/3) ... [2020-09-25 04:27:48,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:48, skipping insertion in model container [2020-09-25 04:27:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:48" (3/3) ... [2020-09-25 04:27:48,574 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 04:27:48,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:48,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:48,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:48,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:48,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:48,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:48,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:48,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:48,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:48,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:48,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 04:27:48,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:48,731 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] [2020-09-25 04:27:48,732 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 04:27:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:48,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:27:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:54,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 04:27:54,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 04:27:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 04:27:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:27:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:54,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:27:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:54,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:54,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:27:54,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:54,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:54,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444575543] [2020-09-25 04:27:54,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:54,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:54,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:54,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:54,468 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:56,990 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 04:27:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:56,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 04:27:56,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:57,032 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 04:27:57,032 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 04:27:57,044 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 04:27:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 04:27:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 04:27:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 04:27:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 04:27:57,151 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 04:27:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:57,152 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 04:27:57,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 04:27:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:27:57,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:57,161 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] [2020-09-25 04:27:57,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:57,162 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 04:27:57,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:57,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751156404] [2020-09-25 04:27:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:28:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:28:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:02,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:02,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:28:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:28:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:28:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:02,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 04:28:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:02,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:02,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:28:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:02,543 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 04:28:02,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751156404] [2020-09-25 04:28:02,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:02,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:02,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399436127] [2020-09-25 04:28:02,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:02,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:02,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:02,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:02,593 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 04:28:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:04,571 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 04:28:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:04,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 04:28:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:04,590 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 04:28:04,591 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 04:28:04,595 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 04:28:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 04:28:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 04:28:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 04:28:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 04:28:04,662 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 146 [2020-09-25 04:28:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:04,664 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 04:28:04,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 04:28:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 04:28:04,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:04,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:04,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:04,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 04:28:04,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:04,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868910468] [2020-09-25 04:28:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:09,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 04:28:09,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-09-25 04:28:09,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:09,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:28:09,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:09,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:09,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:28:09,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:09,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:10,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:28:10,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:28:10,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:10,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:28:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:10,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868910468] [2020-09-25 04:28:10,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:10,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:28:10,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283235186] [2020-09-25 04:28:10,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:10,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:10,156 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 7 states. [2020-09-25 04:28:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:12,798 INFO L93 Difference]: Finished difference Result 2767 states and 3635 transitions. [2020-09-25 04:28:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:12,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 04:28:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:12,821 INFO L225 Difference]: With dead ends: 2767 [2020-09-25 04:28:12,822 INFO L226 Difference]: Without dead ends: 1828 [2020-09-25 04:28:12,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-25 04:28:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1725. [2020-09-25 04:28:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-25 04:28:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2198 transitions. [2020-09-25 04:28:12,909 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2198 transitions. Word has length 172 [2020-09-25 04:28:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:12,910 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2198 transitions. [2020-09-25 04:28:12,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2198 transitions. [2020-09-25 04:28:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 04:28:12,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:12,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:12,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:12,924 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 04:28:12,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:12,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329970036] [2020-09-25 04:28:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:17,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 04:28:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:28:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:28:18,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:28:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:18,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:28:18,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:28:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:18,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329970036] [2020-09-25 04:28:18,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:18,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:18,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587533223] [2020-09-25 04:28:18,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:18,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:18,284 INFO L87 Difference]: Start difference. First operand 1725 states and 2198 transitions. Second operand 7 states. [2020-09-25 04:28:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:20,727 INFO L93 Difference]: Finished difference Result 4708 states and 6341 transitions. [2020-09-25 04:28:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:28:20,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 04:28:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:20,746 INFO L225 Difference]: With dead ends: 4708 [2020-09-25 04:28:20,747 INFO L226 Difference]: Without dead ends: 3005 [2020-09-25 04:28:20,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 04:28:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-09-25 04:28:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2985. [2020-09-25 04:28:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-09-25 04:28:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3925 transitions. [2020-09-25 04:28:20,857 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3925 transitions. Word has length 184 [2020-09-25 04:28:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:20,857 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 3925 transitions. [2020-09-25 04:28:20,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3925 transitions. [2020-09-25 04:28:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 04:28:20,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:20,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:20,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:20,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1852469802, now seen corresponding path program 1 times [2020-09-25 04:28:20,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:20,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473287197] [2020-09-25 04:28:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 04:28:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:28:25,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:25,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:28:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:28:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:26,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:28:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:28:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:26,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:28:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:26,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:26,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:28:26,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:26,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:28:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 04:28:26,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473287197] [2020-09-25 04:28:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:26,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:26,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645663133] [2020-09-25 04:28:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:26,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:26,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:26,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:26,205 INFO L87 Difference]: Start difference. First operand 2985 states and 3925 transitions. Second operand 5 states. [2020-09-25 04:28:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:28,047 INFO L93 Difference]: Finished difference Result 7320 states and 9736 transitions. [2020-09-25 04:28:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:28,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 04:28:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:28,073 INFO L225 Difference]: With dead ends: 7320 [2020-09-25 04:28:28,073 INFO L226 Difference]: Without dead ends: 4357 [2020-09-25 04:28:28,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:28:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2020-09-25 04:28:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4192. [2020-09-25 04:28:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4192 states. [2020-09-25 04:28:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4192 states to 4192 states and 5577 transitions. [2020-09-25 04:28:28,219 INFO L78 Accepts]: Start accepts. Automaton has 4192 states and 5577 transitions. Word has length 188 [2020-09-25 04:28:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:28,219 INFO L479 AbstractCegarLoop]: Abstraction has 4192 states and 5577 transitions. [2020-09-25 04:28:28,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4192 states and 5577 transitions. [2020-09-25 04:28:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 04:28:28,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:28,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:28:28,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:28,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash 381318114, now seen corresponding path program 1 times [2020-09-25 04:28:28,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:28,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752306232] [2020-09-25 04:28:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:28:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:28:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:33,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-25 04:28:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 04:28:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:33,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:28:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 04:28:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:28:33,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:33,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752306232] [2020-09-25 04:28:33,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:33,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:33,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166582802] [2020-09-25 04:28:33,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:33,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:33,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:33,729 INFO L87 Difference]: Start difference. First operand 4192 states and 5577 transitions. Second operand 5 states.