/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/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:11,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:11,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:11,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:11,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:11,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:11,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:11,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:11,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:11,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:11,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:11,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:11,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:11,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:11,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:11,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:11,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:11,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:11,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:11,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:11,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:11,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:11,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:11,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:11,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:11,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:11,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:11,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:11,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:11,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:11,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:11,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:11,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:11,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:11,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:11,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:11,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:11,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:11,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:11,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:11,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:11,559 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 04:29:11,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:11,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:11,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:11,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:11,584 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:11,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:11,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:11,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:11,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:11,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:11,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:11,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:11,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:11,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:11,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:11,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:11,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:11,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:11,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:11,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:11,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:11,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:11,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:11,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:11,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:11,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:11,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:11,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:11,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:11,590 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 04:29:12,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:12,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:12,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:12,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:12,091 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:12,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 04:29:12,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47fbe3f48/0cdb264193494292b56364119771e548/FLAG97a5552bf [2020-09-25 04:29:12,899 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:12,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 04:29:12,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47fbe3f48/0cdb264193494292b56364119771e548/FLAG97a5552bf [2020-09-25 04:29:13,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47fbe3f48/0cdb264193494292b56364119771e548 [2020-09-25 04:29:13,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:13,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:13,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:13,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:13,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:13,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62502cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13, skipping insertion in model container [2020-09-25 04:29:13,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:13,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:13,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:13,740 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:13,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:13,879 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:13,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13 WrapperNode [2020-09-25 04:29:13,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:13,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:13,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:13,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:13,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:13,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (1/1) ... [2020-09-25 04:29:14,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:14,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:14,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:14,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:14,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (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 04:29:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:15,565 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:15,565 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:15,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:15 BoogieIcfgContainer [2020-09-25 04:29:15,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:15,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:15,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:15,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:15,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:13" (1/3) ... [2020-09-25 04:29:15,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786869cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:15, skipping insertion in model container [2020-09-25 04:29:15,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:13" (2/3) ... [2020-09-25 04:29:15,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786869cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:15, skipping insertion in model container [2020-09-25 04:29:15,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:15" (3/3) ... [2020-09-25 04:29:15,592 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 04:29:15,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:15,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:15,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:15,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:15,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:15,701 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:15,701 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:15,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:15,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:15,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:15,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:29:15,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:15,764 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] [2020-09-25 04:29:15,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 04:29:15,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:15,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790965759] [2020-09-25 04:29:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:29:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:29:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-25 04:29:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:16,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:29:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 04:29:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:17,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:29:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:17,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:29:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:17,031 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 04:29:17,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790965759] [2020-09-25 04:29:17,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:17,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:17,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351063606] [2020-09-25 04:29:17,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:17,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:17,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:17,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:17,064 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:29:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:19,032 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 04:29:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:19,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 04:29:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:19,070 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 04:29:19,071 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 04:29:19,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 04:29:19,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 04:29:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 04:29:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 04:29:19,195 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 04:29:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:19,196 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 04:29:19,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 04:29:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:29:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:19,208 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, 1, 1, 1, 1, 1, 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 04:29:19,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:19,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:19,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 04:29:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:19,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079365853] [2020-09-25 04:29:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:29:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2383 [2020-09-25 04:29:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:29:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 04:29:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:29:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:29:21,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:29:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:21,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079365853] [2020-09-25 04:29:21,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:21,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:21,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651099963] [2020-09-25 04:29:21,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:21,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:21,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:21,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:21,981 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 04:29:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:24,108 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-25 04:29:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:24,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 04:29:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:24,116 INFO L225 Difference]: With dead ends: 1419 [2020-09-25 04:29:24,117 INFO L226 Difference]: Without dead ends: 891 [2020-09-25 04:29:24,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 04:29:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-25 04:29:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-25 04:29:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-25 04:29:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-25 04:29:24,179 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 165 [2020-09-25 04:29:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:24,180 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-25 04:29:24,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-25 04:29:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 04:29:24,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:24,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:24,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:24,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 04:29:24,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:24,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722895750] [2020-09-25 04:29:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:29,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 04:29:29,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:29:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:29,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:29:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:29:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:29,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:29,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:29,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:29,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:29,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:29,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:29,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:29,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:29,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:29,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:29,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:29:29,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:29,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:29:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:29,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722895750] [2020-09-25 04:29:29,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:29,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:29,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791335351] [2020-09-25 04:29:29,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:29,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:29,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:29,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:29,624 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 5 states. [2020-09-25 04:29:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:31,543 INFO L93 Difference]: Finished difference Result 2011 states and 2549 transitions. [2020-09-25 04:29:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:31,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 04:29:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:31,553 INFO L225 Difference]: With dead ends: 2011 [2020-09-25 04:29:31,554 INFO L226 Difference]: Without dead ends: 838 [2020-09-25 04:29:31,558 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 04:29:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-09-25 04:29:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 816. [2020-09-25 04:29:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 04:29:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 989 transitions. [2020-09-25 04:29:31,600 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 989 transitions. Word has length 174 [2020-09-25 04:29:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:31,606 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 989 transitions. [2020-09-25 04:29:31,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 989 transitions. [2020-09-25 04:29:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:29:31,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:31,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:31,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:31,610 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:31,610 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-25 04:29:31,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:31,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682015071] [2020-09-25 04:29:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:34,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:29:34,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3240 [2020-09-25 04:29:34,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:34,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:29:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 04:29:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:35,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:35,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:35,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:35,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:35,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:35,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:29:35,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:29:35,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:35,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:29:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:35,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682015071] [2020-09-25 04:29:35,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:35,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:35,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996426603] [2020-09-25 04:29:35,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:35,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:35,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:35,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:35,210 INFO L87 Difference]: Start difference. First operand 816 states and 989 transitions. Second operand 5 states. [2020-09-25 04:29:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:36,795 INFO L93 Difference]: Finished difference Result 2101 states and 2616 transitions. [2020-09-25 04:29:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:36,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 04:29:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:36,807 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 04:29:36,807 INFO L226 Difference]: Without dead ends: 1300 [2020-09-25 04:29:36,812 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 04:29:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-09-25 04:29:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1274. [2020-09-25 04:29:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-09-25 04:29:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1493 transitions. [2020-09-25 04:29:36,864 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1493 transitions. Word has length 176 [2020-09-25 04:29:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:36,864 INFO L479 AbstractCegarLoop]: Abstraction has 1274 states and 1493 transitions. [2020-09-25 04:29:36,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1493 transitions. [2020-09-25 04:29:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 04:29:36,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:36,870 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, 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, 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] [2020-09-25 04:29:36,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:36,870 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1488860707, now seen corresponding path program 1 times [2020-09-25 04:29:36,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:36,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138938588] [2020-09-25 04:29:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:41,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 04:29:41,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:29:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:41,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:29:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:29:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:42,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:29:42,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:29:42,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:29:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:29:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:29:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 04:29:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:29:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:42,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138938588] [2020-09-25 04:29:42,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:42,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:42,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227575290] [2020-09-25 04:29:42,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:42,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:42,529 INFO L87 Difference]: Start difference. First operand 1274 states and 1493 transitions. Second operand 7 states. [2020-09-25 04:29:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:44,979 INFO L93 Difference]: Finished difference Result 3049 states and 3679 transitions. [2020-09-25 04:29:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:44,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-09-25 04:29:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:44,987 INFO L225 Difference]: With dead ends: 3049 [2020-09-25 04:29:44,987 INFO L226 Difference]: Without dead ends: 1790 [2020-09-25 04:29:44,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:29:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2020-09-25 04:29:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1600. [2020-09-25 04:29:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-09-25 04:29:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 1847 transitions. [2020-09-25 04:29:45,045 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 1847 transitions. Word has length 256 [2020-09-25 04:29:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:45,046 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 1847 transitions. [2020-09-25 04:29:45,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 1847 transitions. [2020-09-25 04:29:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 04:29:45,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:45,053 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 04:29:45,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:45,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:45,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2003769290, now seen corresponding path program 1 times [2020-09-25 04:29:45,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:45,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629585506] [2020-09-25 04:29:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 04:29:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:29:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:29:50,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:29:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:29:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:50,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:50,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:50,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:29:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:29:50,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 04:29:50,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:50,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:50,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:29:50,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:29:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:29:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:29:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:50,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629585506] [2020-09-25 04:29:50,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:50,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:50,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35709755] [2020-09-25 04:29:50,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:50,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:50,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:50,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:50,576 INFO L87 Difference]: Start difference. First operand 1600 states and 1847 transitions. Second operand 7 states. [2020-09-25 04:29:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:52,785 INFO L93 Difference]: Finished difference Result 3567 states and 4241 transitions. [2020-09-25 04:29:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:52,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-25 04:29:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:52,798 INFO L225 Difference]: With dead ends: 3567 [2020-09-25 04:29:52,798 INFO L226 Difference]: Without dead ends: 1982 [2020-09-25 04:29:52,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2020-09-25 04:29:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1798. [2020-09-25 04:29:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2020-09-25 04:29:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2078 transitions. [2020-09-25 04:29:52,862 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2078 transitions. Word has length 263 [2020-09-25 04:29:52,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:52,863 INFO L479 AbstractCegarLoop]: Abstraction has 1798 states and 2078 transitions. [2020-09-25 04:29:52,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2078 transitions. [2020-09-25 04:29:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 04:29:52,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:52,870 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 04:29:52,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:29:52,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash -657272076, now seen corresponding path program 1 times [2020-09-25 04:29:52,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:52,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245682520] [2020-09-25 04:29:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking...