/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:35:03,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:35:03,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:35:03,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:35:03,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:35:03,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:35:03,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:35:03,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:35:03,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:35:03,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:35:03,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:35:03,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:35:03,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:35:03,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:35:03,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:35:03,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:35:03,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:35:03,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:35:03,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:35:03,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:35:03,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:35:03,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:35:03,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:35:03,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:35:03,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:35:03,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:35:03,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:35:03,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:35:03,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:35:03,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:35:03,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:35:03,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:35:03,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:35:03,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:35:03,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:35:03,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:35:03,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:35:03,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:35:03,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:35:03,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:35:03,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:35:03,612 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 [2020-10-13 08:35:03,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:35:03,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:35:03,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:35:03,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:35:03,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:35:03,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:35:03,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:35:03,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:35:03,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:35:03,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:35:03,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:35:03,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:35:03,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:35:03,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:35:03,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:35:03,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:35:03,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:35:03,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:35:03,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:35:03,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:35:03,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:35:03,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:35:03,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:35:03,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:35:03,643 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:35:03,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:35:03,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:35:03,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:35:03,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:35:03,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:35:03,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24.c [2020-10-13 08:35:04,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13b199e8/f11c6b7c22a747778cff8f6ac7cf1d80/FLAG19d2d89dd [2020-10-13 08:35:04,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:35:04,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label24.c [2020-10-13 08:35:04,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13b199e8/f11c6b7c22a747778cff8f6ac7cf1d80/FLAG19d2d89dd [2020-10-13 08:35:05,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13b199e8/f11c6b7c22a747778cff8f6ac7cf1d80 [2020-10-13 08:35:05,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:35:05,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:35:05,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:05,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:35:05,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:35:05,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:05" (1/1) ... [2020-10-13 08:35:05,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:05, skipping insertion in model container [2020-10-13 08:35:05,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:05" (1/1) ... [2020-10-13 08:35:05,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:35:05,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:35:07,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:07,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:35:08,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:08,115 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:35:08,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08 WrapperNode [2020-10-13 08:35:08,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:08,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:35:08,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:35:08,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:35:08,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (1/1) ... [2020-10-13 08:35:08,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:35:08,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:35:08,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:35:08,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:35:08,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (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 [2020-10-13 08:35:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:35:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:35:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:35:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:35:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:35:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:35:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:35:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:35:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:35:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:35:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:35:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:35:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:35:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:35:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:35:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:35:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:35:19,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:35:19,607 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:35:19,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:35:19 BoogieIcfgContainer [2020-10-13 08:35:19,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:35:19,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:35:19,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:35:19,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:35:19,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:35:05" (1/3) ... [2020-10-13 08:35:19,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2bf63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:35:19, skipping insertion in model container [2020-10-13 08:35:19,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:08" (2/3) ... [2020-10-13 08:35:19,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2bf63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:35:19, skipping insertion in model container [2020-10-13 08:35:19,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:35:19" (3/3) ... [2020-10-13 08:35:19,636 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2020-10-13 08:35:19,647 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:35:19,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:35:19,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:35:19,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:35:19,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:35:19,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:35:19,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:35:19,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:35:19,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:35:19,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:35:19,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:35:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:35:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 08:35:19,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:19,782 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] [2020-10-13 08:35:19,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1730223288, now seen corresponding path program 1 times [2020-10-13 08:35:19,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:19,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411519673] [2020-10-13 08:35:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 08:35:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-13 08:35:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:35:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:35:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:35:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:35:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:35:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:35:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:20,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411519673] [2020-10-13 08:35:20,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:35:20,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:35:20,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104094518] [2020-10-13 08:35:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:35:20,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:20,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:35:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:35:20,560 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:35:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:33,367 INFO L93 Difference]: Finished difference Result 3107 states and 5729 transitions. [2020-10-13 08:35:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:33,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 08:35:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:33,407 INFO L225 Difference]: With dead ends: 3107 [2020-10-13 08:35:33,407 INFO L226 Difference]: Without dead ends: 1903 [2020-10-13 08:35:33,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-13 08:35:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1883. [2020-10-13 08:35:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-13 08:35:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2890 transitions. [2020-10-13 08:35:33,587 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2890 transitions. Word has length 35 [2020-10-13 08:35:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:33,588 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2890 transitions. [2020-10-13 08:35:33,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:35:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2890 transitions. [2020-10-13 08:35:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:35:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:33,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:33,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:35:33,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:33,596 INFO L82 PathProgramCache]: Analyzing trace with hash 386487745, now seen corresponding path program 1 times [2020-10-13 08:35:33,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:33,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428133339] [2020-10-13 08:35:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:35:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:35:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-13 08:35:35,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:35:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:35:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:35:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:35,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:35,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:35:35,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:35,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:35,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:35:35,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:35:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:35:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:35,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428133339] [2020-10-13 08:35:35,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:35,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:35,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607881498] [2020-10-13 08:35:35,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:35,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:35,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:35,618 INFO L87 Difference]: Start difference. First operand 1883 states and 2890 transitions. Second operand 5 states. [2020-10-13 08:35:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:46,704 INFO L93 Difference]: Finished difference Result 2975 states and 4831 transitions. [2020-10-13 08:35:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:46,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:35:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:46,716 INFO L225 Difference]: With dead ends: 2975 [2020-10-13 08:35:46,717 INFO L226 Difference]: Without dead ends: 1898 [2020-10-13 08:35:46,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-10-13 08:35:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1883. [2020-10-13 08:35:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-13 08:35:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2888 transitions. [2020-10-13 08:35:46,787 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2888 transitions. Word has length 104 [2020-10-13 08:35:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:46,787 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2888 transitions. [2020-10-13 08:35:46,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2888 transitions. [2020-10-13 08:35:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:35:46,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:46,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:46,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:35:46,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1566483325, now seen corresponding path program 1 times [2020-10-13 08:35:46,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:46,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470188849] [2020-10-13 08:35:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:35:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-13 08:35:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:35:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:35:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:47,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:47,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:47,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:35:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:47,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:47,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:35:47,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:35:47,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:35:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:47,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470188849] [2020-10-13 08:35:47,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:47,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:47,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410618252] [2020-10-13 08:35:47,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:47,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:47,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:47,948 INFO L87 Difference]: Start difference. First operand 1883 states and 2888 transitions. Second operand 5 states. [2020-10-13 08:36:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:05,441 INFO L93 Difference]: Finished difference Result 5446 states and 8384 transitions. [2020-10-13 08:36:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:05,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:36:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:05,461 INFO L225 Difference]: With dead ends: 5446 [2020-10-13 08:36:05,462 INFO L226 Difference]: Without dead ends: 3569 [2020-10-13 08:36:05,467 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 [2020-10-13 08:36:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2020-10-13 08:36:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3561. [2020-10-13 08:36:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-10-13 08:36:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4804 transitions. [2020-10-13 08:36:05,558 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4804 transitions. Word has length 111 [2020-10-13 08:36:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:05,559 INFO L479 AbstractCegarLoop]: Abstraction has 3561 states and 4804 transitions. [2020-10-13 08:36:05,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4804 transitions. [2020-10-13 08:36:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:36:05,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:05,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:36:05,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:36:05,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash -492058863, now seen corresponding path program 1 times [2020-10-13 08:36:05,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:05,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69273260] [2020-10-13 08:36:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:36:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:36:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-13 08:36:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 08:36:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:36:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:06,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:06,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:36:06,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:06,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:36:06,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:06,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:36:06,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:36:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:06,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69273260] [2020-10-13 08:36:06,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:06,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:06,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561484005] [2020-10-13 08:36:06,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:06,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:06,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:06,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:06,850 INFO L87 Difference]: Start difference. First operand 3561 states and 4804 transitions. Second operand 5 states. [2020-10-13 08:36:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:25,642 INFO L93 Difference]: Finished difference Result 8785 states and 12254 transitions. [2020-10-13 08:36:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:25,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:36:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:25,670 INFO L225 Difference]: With dead ends: 8785 [2020-10-13 08:36:25,670 INFO L226 Difference]: Without dead ends: 5230 [2020-10-13 08:36:25,680 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 [2020-10-13 08:36:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2020-10-13 08:36:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 5209. [2020-10-13 08:36:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5209 states. [2020-10-13 08:36:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 6727 transitions. [2020-10-13 08:36:25,828 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 6727 transitions. Word has length 112 [2020-10-13 08:36:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:25,830 INFO L479 AbstractCegarLoop]: Abstraction has 5209 states and 6727 transitions. [2020-10-13 08:36:25,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 6727 transitions. [2020-10-13 08:36:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:36:25,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:25,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:36:25,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:36:25,838 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1347091778, now seen corresponding path program 1 times [2020-10-13 08:36:25,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:25,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80165809] [2020-10-13 08:36:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:26,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:36:26,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 08:36:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:36:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:36:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:26,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:26,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:26,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:36:26,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:36:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:36:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:26,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80165809] [2020-10-13 08:36:26,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:26,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:26,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176169972] [2020-10-13 08:36:26,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:26,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:26,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:26,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:26,882 INFO L87 Difference]: Start difference. First operand 5209 states and 6727 transitions. Second operand 5 states. [2020-10-13 08:36:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:48,498 INFO L93 Difference]: Finished difference Result 15389 states and 20147 transitions. [2020-10-13 08:36:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:48,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 08:36:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:48,551 INFO L225 Difference]: With dead ends: 15389 [2020-10-13 08:36:48,552 INFO L226 Difference]: Without dead ends: 10186 [2020-10-13 08:36:48,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2020-10-13 08:36:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 10131. [2020-10-13 08:36:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10131 states. [2020-10-13 08:36:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10131 states to 10131 states and 12810 transitions. [2020-10-13 08:36:48,801 INFO L78 Accepts]: Start accepts. Automaton has 10131 states and 12810 transitions. Word has length 121 [2020-10-13 08:36:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:48,802 INFO L479 AbstractCegarLoop]: Abstraction has 10131 states and 12810 transitions. [2020-10-13 08:36:48,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 10131 states and 12810 transitions. [2020-10-13 08:36:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 08:36:48,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:48,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:36:48,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:36:48,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2136487671, now seen corresponding path program 1 times [2020-10-13 08:36:48,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:48,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439716306] [2020-10-13 08:36:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:36:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-13 08:36:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:36:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:36:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:49,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:49,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:36:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:50,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:36:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:36:50,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:36:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:50,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439716306] [2020-10-13 08:36:50,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:50,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:36:50,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662710036] [2020-10-13 08:36:50,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:36:50,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:50,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:36:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:50,191 INFO L87 Difference]: Start difference. First operand 10131 states and 12810 transitions. Second operand 6 states. [2020-10-13 08:37:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:20,626 INFO L93 Difference]: Finished difference Result 26809 states and 35963 transitions. [2020-10-13 08:37:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:37:20,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-13 08:37:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:20,719 INFO L225 Difference]: With dead ends: 26809 [2020-10-13 08:37:20,719 INFO L226 Difference]: Without dead ends: 16684 [2020-10-13 08:37:20,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:37:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2020-10-13 08:37:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 15850. [2020-10-13 08:37:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15850 states. [2020-10-13 08:37:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15850 states to 15850 states and 20613 transitions. [2020-10-13 08:37:21,210 INFO L78 Accepts]: Start accepts. Automaton has 15850 states and 20613 transitions. Word has length 140 [2020-10-13 08:37:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:21,211 INFO L479 AbstractCegarLoop]: Abstraction has 15850 states and 20613 transitions. [2020-10-13 08:37:21,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:37:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15850 states and 20613 transitions. [2020-10-13 08:37:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 08:37:21,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:21,217 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:37:21,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:37:21,218 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:21,218 INFO L82 PathProgramCache]: Analyzing trace with hash 23282261, now seen corresponding path program 1 times [2020-10-13 08:37:21,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:21,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905220273] [2020-10-13 08:37:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 08:37:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:37:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5777 [2020-10-13 08:37:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 08:37:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:37:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:27,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:27,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:27,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:27,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:27,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:37:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:37:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:37:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:27,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:27,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:37:27,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:37:27,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:37:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:37:27,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905220273] [2020-10-13 08:37:27,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:27,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:27,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133037755] [2020-10-13 08:37:27,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:27,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:27,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:27,351 INFO L87 Difference]: Start difference. First operand 15850 states and 20613 transitions. Second operand 5 states. [2020-10-13 08:37:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:54,223 INFO L93 Difference]: Finished difference Result 45485 states and 60953 transitions. [2020-10-13 08:37:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:54,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-13 08:37:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:54,356 INFO L225 Difference]: With dead ends: 45485 [2020-10-13 08:37:54,357 INFO L226 Difference]: Without dead ends: 29641 [2020-10-13 08:37:54,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:37:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29641 states. [2020-10-13 08:37:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29641 to 29640. [2020-10-13 08:37:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29640 states. [2020-10-13 08:37:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29640 states to 29640 states and 38437 transitions. [2020-10-13 08:37:55,196 INFO L78 Accepts]: Start accepts. Automaton has 29640 states and 38437 transitions. Word has length 187 [2020-10-13 08:37:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:55,197 INFO L479 AbstractCegarLoop]: Abstraction has 29640 states and 38437 transitions. [2020-10-13 08:37:55,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 29640 states and 38437 transitions. [2020-10-13 08:37:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 08:37:55,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:55,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:37:55,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:37:55,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:55,209 INFO L82 PathProgramCache]: Analyzing trace with hash -970670774, now seen corresponding path program 1 times [2020-10-13 08:37:55,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:55,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180590453] [2020-10-13 08:37:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:00,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:00,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 08:38:00,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:38:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 08:38:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:38:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:38:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:00,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:00,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:00,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:38:00,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:38:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:38:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:00,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:38:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:38:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:38:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:38:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:38:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:38:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:00,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 08:38:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:01,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:01,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:38:01,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 08:38:01,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 08:38:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 155 proven. 69 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:38:01,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180590453] [2020-10-13 08:38:01,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:01,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:38:01,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672039911] [2020-10-13 08:38:01,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:38:01,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:38:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:38:01,255 INFO L87 Difference]: Start difference. First operand 29640 states and 38437 transitions. Second operand 7 states. [2020-10-13 08:38:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:36,603 INFO L93 Difference]: Finished difference Result 63303 states and 90325 transitions. [2020-10-13 08:38:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:38:36,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-13 08:38:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:36,766 INFO L225 Difference]: With dead ends: 63303 [2020-10-13 08:38:36,766 INFO L226 Difference]: Without dead ends: 46649 [2020-10-13 08:38:36,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:38:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46649 states. [2020-10-13 08:38:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46649 to 39378. [2020-10-13 08:38:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39378 states. [2020-10-13 08:38:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39378 states to 39378 states and 52947 transitions. [2020-10-13 08:38:37,904 INFO L78 Accepts]: Start accepts. Automaton has 39378 states and 52947 transitions. Word has length 256 [2020-10-13 08:38:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:37,905 INFO L479 AbstractCegarLoop]: Abstraction has 39378 states and 52947 transitions. [2020-10-13 08:38:37,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:38:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 39378 states and 52947 transitions. [2020-10-13 08:38:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:38:37,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:37,915 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:38:37,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:38:37,916 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:37,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:37,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1301538278, now seen corresponding path program 1 times [2020-10-13 08:38:37,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:37,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263989891] [2020-10-13 08:38:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:40,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 08:38:40,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:38:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2829 [2020-10-13 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:38:40,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:38:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:38:41,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:38:41,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:38:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:38:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:38:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:41,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:38:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 08:38:41,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 08:38:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:38:41,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263989891] [2020-10-13 08:38:41,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:41,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:38:41,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470552021] [2020-10-13 08:38:41,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:38:41,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:38:41,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:38:41,615 INFO L87 Difference]: Start difference. First operand 39378 states and 52947 transitions. Second operand 7 states.