/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=WIDEST --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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:21:52,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:21:52,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:21:52,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:21:52,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:21:52,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:21:52,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:21:52,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:21:52,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:21:52,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:21:52,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:21:52,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:21:52,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:21:52,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:21:52,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:21:52,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:21:52,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:21:52,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:21:52,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:21:52,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:21:52,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:21:52,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:21:52,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:21:52,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:21:52,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:21:52,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:21:52,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:21:52,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:21:52,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:21:52,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:21:52,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:21:52,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:21:52,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:21:52,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:21:52,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:21:52,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:21:52,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:21:52,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:21:52,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:21:52,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:21:52,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:21:52,510 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 03:21:52,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:21:52,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:21:52,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:21:52,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:21:52,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:21:52,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:21:52,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:21:52,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:21:52,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:21:52,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:21:52,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:21:52,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:21:52,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:21:52,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:21:52,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:21:52,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:21:52,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:21:52,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:21:52,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:21:52,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:21:52,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:21:52,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:21:52,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:21:52,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:21:52,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:21:52,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:21:52,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:21:52,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:21:52,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:21:52,550 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:21:53,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:21:53,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:21:53,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:21:53,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:21:53,047 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:21:53,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 03:21:53,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3773e455c/970f444df44b419babf33ef59da46731/FLAG6f4652241 [2020-09-25 03:21:53,789 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:21:53,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 03:21:53,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3773e455c/970f444df44b419babf33ef59da46731/FLAG6f4652241 [2020-09-25 03:21:54,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3773e455c/970f444df44b419babf33ef59da46731 [2020-09-25 03:21:54,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:21:54,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:21:54,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:21:54,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:21:54,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:21:54,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:54,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef9f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54, skipping insertion in model container [2020-09-25 03:21:54,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:54,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:21:54,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:21:54,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:21:54,658 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:21:54,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:21:54,920 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:21:54,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54 WrapperNode [2020-09-25 03:21:54,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:21:54,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:21:54,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:21:54,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:21:54,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:54,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:54,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:54,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:55,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:55,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:55,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (1/1) ... [2020-09-25 03:21:55,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:21:55,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:21:55,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:21:55,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:21:55,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (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 03:21:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:21:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:21:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:21:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:21:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:21:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:21:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:21:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:21:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:21:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:21:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:21:56,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:21:56,592 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:21:56,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:21:56 BoogieIcfgContainer [2020-09-25 03:21:56,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:21:56,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:21:56,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:21:56,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:21:56,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:21:54" (1/3) ... [2020-09-25 03:21:56,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:21:56, skipping insertion in model container [2020-09-25 03:21:56,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:54" (2/3) ... [2020-09-25 03:21:56,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:21:56, skipping insertion in model container [2020-09-25 03:21:56,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:21:56" (3/3) ... [2020-09-25 03:21:56,612 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 03:21:56,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:21:56,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:21:56,661 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:21:56,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:21:56,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:21:56,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:21:56,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:21:56,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:21:56,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:21:56,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:21:56,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:21:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 03:21:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:21:56,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:56,745 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] [2020-09-25 03:21:56,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 03:21:56,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:56,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930015990] [2020-09-25 03:21:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:56,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:57,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:21:57,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:21:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-09-25 03:21:57,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:21:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:21:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:21:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:21:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:58,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:58,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:21:58,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:21:58,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:21:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:58,084 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 03:21:58,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930015990] [2020-09-25 03:21:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:21:58,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:21:58,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853176761] [2020-09-25 03:21:58,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:21:58,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:21:58,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:21:58,119 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 03:22:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:00,160 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 03:22:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:22:00,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 03:22:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:00,186 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 03:22:00,187 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 03:22:00,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 03:22:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 03:22:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 03:22:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 03:22:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 03:22:00,292 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 03:22:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:00,293 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 03:22:00,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:22:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 03:22:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 03:22:00,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:00,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:00,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:22:00,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 03:22:00,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:00,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618035054] [2020-09-25 03:22:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:05,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:05,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 03:22:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:22:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4886 [2020-09-25 03:22:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:22:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:22:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 03:22:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:05,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 03:22:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:22:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:22:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:05,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:05,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:22:05,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 03:22:05,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:22:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:05,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618035054] [2020-09-25 03:22:05,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:05,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:22:05,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091470640] [2020-09-25 03:22:05,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:22:05,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:22:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:22:05,877 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-25 03:22:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:09,159 INFO L93 Difference]: Finished difference Result 1267 states and 1577 transitions. [2020-09-25 03:22:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:22:09,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 03:22:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:09,168 INFO L225 Difference]: With dead ends: 1267 [2020-09-25 03:22:09,169 INFO L226 Difference]: Without dead ends: 738 [2020-09-25 03:22:09,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:22:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-25 03:22:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 695. [2020-09-25 03:22:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 03:22:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 860 transitions. [2020-09-25 03:22:09,246 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 860 transitions. Word has length 132 [2020-09-25 03:22:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:09,247 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 860 transitions. [2020-09-25 03:22:09,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:22:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 860 transitions. [2020-09-25 03:22:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 03:22:09,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:09,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:09,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:22:09,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:09,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2030200294, now seen corresponding path program 1 times [2020-09-25 03:22:09,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:09,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678878351] [2020-09-25 03:22:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:14,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 03:22:14,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:22:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:22:14,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:22:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:22:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 03:22:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:14,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:14,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:14,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:22:14,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:22:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:22:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:22:14,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:14,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:14,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 03:22:14,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 03:22:14,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 03:22:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:15,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678878351] [2020-09-25 03:22:15,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:15,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:22:15,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817565814] [2020-09-25 03:22:15,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:22:15,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:22:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:22:15,083 INFO L87 Difference]: Start difference. First operand 695 states and 860 transitions. Second operand 10 states. [2020-09-25 03:22:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:18,767 INFO L93 Difference]: Finished difference Result 1607 states and 2094 transitions. [2020-09-25 03:22:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:22:18,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-09-25 03:22:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:18,776 INFO L225 Difference]: With dead ends: 1607 [2020-09-25 03:22:18,776 INFO L226 Difference]: Without dead ends: 1049 [2020-09-25 03:22:18,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:22:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-09-25 03:22:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1020. [2020-09-25 03:22:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-09-25 03:22:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1232 transitions. [2020-09-25 03:22:18,820 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1232 transitions. Word has length 185 [2020-09-25 03:22:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:18,821 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1232 transitions. [2020-09-25 03:22:18,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:22:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1232 transitions. [2020-09-25 03:22:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 03:22:18,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:18,830 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, 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 03:22:18,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:22:18,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:18,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1983600035, now seen corresponding path program 1 times [2020-09-25 03:22:18,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:18,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800221720] [2020-09-25 03:22:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 03:22:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:22:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:22:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:22:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:22:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 03:22:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:22:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:22:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:22:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:24,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:22:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:22:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:22:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:22:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 03:22:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 03:22:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 03:22:24,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 03:22:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 03:22:24,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800221720] [2020-09-25 03:22:24,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:24,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:22:24,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873564544] [2020-09-25 03:22:24,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:22:24,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:24,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:22:24,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:22:24,953 INFO L87 Difference]: Start difference. First operand 1020 states and 1232 transitions. Second operand 10 states. [2020-09-25 03:22:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:30,950 INFO L93 Difference]: Finished difference Result 2395 states and 3068 transitions. [2020-09-25 03:22:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:22:30,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2020-09-25 03:22:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:30,959 INFO L225 Difference]: With dead ends: 2395 [2020-09-25 03:22:30,959 INFO L226 Difference]: Without dead ends: 1514 [2020-09-25 03:22:30,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:22:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-09-25 03:22:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1324. [2020-09-25 03:22:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-09-25 03:22:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1586 transitions. [2020-09-25 03:22:31,002 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1586 transitions. Word has length 224 [2020-09-25 03:22:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:31,003 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 1586 transitions. [2020-09-25 03:22:31,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:22:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1586 transitions. [2020-09-25 03:22:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 03:22:31,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:31,008 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, 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] [2020-09-25 03:22:31,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:22:31,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1015798065, now seen corresponding path program 1 times [2020-09-25 03:22:31,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:31,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966814471] [2020-09-25 03:22:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 03:22:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:22:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 03:22:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:22:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:22:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-09-25 03:22:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:36,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 03:22:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:22:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:22:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:36,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:22:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 03:22:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:22:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 03:22:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:36,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 03:22:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:22:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-25 03:22:36,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 03:22:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 7 proven. 142 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:22:37,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966814471] [2020-09-25 03:22:37,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:37,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:22:37,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648205667] [2020-09-25 03:22:37,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:22:37,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:37,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:22:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:22:37,176 INFO L87 Difference]: Start difference. First operand 1324 states and 1586 transitions. Second operand 11 states. [2020-09-25 03:22:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:41,672 INFO L93 Difference]: Finished difference Result 3588 states and 4553 transitions. [2020-09-25 03:22:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:22:41,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-09-25 03:22:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:41,685 INFO L225 Difference]: With dead ends: 3588 [2020-09-25 03:22:41,686 INFO L226 Difference]: Without dead ends: 2429 [2020-09-25 03:22:41,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:22:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-09-25 03:22:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2304. [2020-09-25 03:22:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-09-25 03:22:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2889 transitions. [2020-09-25 03:22:41,768 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2889 transitions. Word has length 240 [2020-09-25 03:22:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:41,769 INFO L479 AbstractCegarLoop]: Abstraction has 2304 states and 2889 transitions. [2020-09-25 03:22:41,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:22:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2889 transitions. [2020-09-25 03:22:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 03:22:41,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:41,776 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, 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] [2020-09-25 03:22:41,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:22:41,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:41,777 INFO L82 PathProgramCache]: Analyzing trace with hash -303389455, now seen corresponding path program 1 times [2020-09-25 03:22:41,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:41,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786188379] [2020-09-25 03:22:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking...