/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem15_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:24:09,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:24:09,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:24:09,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:24:09,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:24:09,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:24:09,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:24:09,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:24:09,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:24:09,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:24:09,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:24:09,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:24:09,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:24:09,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:24:09,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:24:09,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:24:09,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:24:09,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:24:09,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:24:09,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:24:09,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:24:09,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:24:09,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:24:09,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:24:09,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:24:09,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:24:09,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:24:09,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:24:09,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:24:09,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:24:09,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:24:09,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:24:09,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:24:09,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:24:09,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:24:09,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:24:09,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:24:09,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:24:09,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:24:09,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:24:09,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:24:09,640 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 [2020-10-14 03:24:09,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:24:09,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:24:09,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:24:09,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:24:09,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:24:09,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:24:09,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:24:09,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:24:09,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:24:09,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:24:09,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:24:09,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:24:09,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:24:09,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:24:09,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:24:09,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:24:09,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:24:09,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:24:09,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:24:09,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:24:09,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:24:09,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:24:09,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:24:09,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:24:09,672 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:24:10,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:24:10,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:24:10,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:24:10,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:24:10,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:24:10,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-14 03:24:10,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047955256/081af3eea10949ebb18286848cfb7973/FLAG21949e013 [2020-10-14 03:24:10,800 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:24:10,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-14 03:24:10,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047955256/081af3eea10949ebb18286848cfb7973/FLAG21949e013 [2020-10-14 03:24:10,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047955256/081af3eea10949ebb18286848cfb7973 [2020-10-14 03:24:10,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:24:10,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:24:10,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:10,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:24:10,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:24:10,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10, skipping insertion in model container [2020-10-14 03:24:10,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:24:11,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:24:11,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:11,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:24:12,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:12,394 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:24:12,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12 WrapperNode [2020-10-14 03:24:12,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:12,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:24:12,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:24:12,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:24:12,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (1/1) ... [2020-10-14 03:24:12,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:24:12,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:24:12,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:24:12,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:24:12,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (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 [2020-10-14 03:24:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:24:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:24:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:24:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:24:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:24:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:24:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:24:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:24:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:24:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:24:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:24:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:24:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:24:19,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:24:19,057 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:24:19,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:19 BoogieIcfgContainer [2020-10-14 03:24:19,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:24:19,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:24:19,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:24:19,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:24:19,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:24:10" (1/3) ... [2020-10-14 03:24:19,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b605963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:19, skipping insertion in model container [2020-10-14 03:24:19,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:12" (2/3) ... [2020-10-14 03:24:19,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b605963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:19, skipping insertion in model container [2020-10-14 03:24:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:19" (3/3) ... [2020-10-14 03:24:19,091 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label09.c [2020-10-14 03:24:19,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:24:19,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:24:19,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:24:19,163 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:24:19,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:24:19,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:24:19,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:24:19,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:24:19,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:24:19,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:24:19,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:24:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:24:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 03:24:19,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:19,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:19,205 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:19,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:19,212 INFO L82 PathProgramCache]: Analyzing trace with hash 399541885, now seen corresponding path program 1 times [2020-10-14 03:24:19,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:19,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038896574] [2020-10-14 03:24:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:19,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:19,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 03:24:19,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 03:24:19,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:19,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 03:24:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:24:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:24:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:19,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:24:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:19,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038896574] [2020-10-14 03:24:19,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:19,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:24:19,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35310567] [2020-10-14 03:24:19,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:24:19,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:19,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:24:19,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:24:19,812 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:24:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:28,644 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-14 03:24:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:28,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 03:24:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:28,672 INFO L225 Difference]: With dead ends: 1240 [2020-10-14 03:24:28,672 INFO L226 Difference]: Without dead ends: 724 [2020-10-14 03:24:28,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-14 03:24:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-14 03:24:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 03:24:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-14 03:24:28,817 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 13 [2020-10-14 03:24:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:28,818 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-14 03:24:28,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:24:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-14 03:24:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 03:24:28,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:28,826 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:24:28,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:24:28,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:28,827 INFO L82 PathProgramCache]: Analyzing trace with hash 972468257, now seen corresponding path program 1 times [2020-10-14 03:24:28,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:28,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544116128] [2020-10-14 03:24:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:30,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:30,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 03:24:30,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:30,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-14 03:24:30,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:30,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:24:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:24:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:24:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:30,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:30,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:30,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:24:30,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 03:24:30,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:30,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:24:30,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:30,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544116128] [2020-10-14 03:24:30,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:30,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:30,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327042577] [2020-10-14 03:24:30,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:30,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:30,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:30,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:30,700 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-14 03:24:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:37,522 INFO L93 Difference]: Finished difference Result 2052 states and 3298 transitions. [2020-10-14 03:24:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:37,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-14 03:24:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:37,532 INFO L225 Difference]: With dead ends: 2052 [2020-10-14 03:24:37,533 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 03:24:37,535 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 [2020-10-14 03:24:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 03:24:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1340. [2020-10-14 03:24:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-10-14 03:24:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1864 transitions. [2020-10-14 03:24:37,594 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1864 transitions. Word has length 85 [2020-10-14 03:24:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:37,595 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 1864 transitions. [2020-10-14 03:24:37,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1864 transitions. [2020-10-14 03:24:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 03:24:37,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:37,600 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:24:37,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:24:37,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:37,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1917049853, now seen corresponding path program 1 times [2020-10-14 03:24:37,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:37,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94558224] [2020-10-14 03:24:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:38,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:24:38,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-14 03:24:38,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:38,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:24:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:24:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:24:38,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:38,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:38,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:38,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:24:38,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:24:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:38,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:24:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:38,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94558224] [2020-10-14 03:24:38,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:38,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542925880] [2020-10-14 03:24:38,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:38,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:38,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:38,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:38,842 INFO L87 Difference]: Start difference. First operand 1340 states and 1864 transitions. Second operand 5 states. [2020-10-14 03:24:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:50,306 INFO L93 Difference]: Finished difference Result 3307 states and 4785 transitions. [2020-10-14 03:24:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:50,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 03:24:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:50,322 INFO L225 Difference]: With dead ends: 3307 [2020-10-14 03:24:50,323 INFO L226 Difference]: Without dead ends: 1973 [2020-10-14 03:24:50,327 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 [2020-10-14 03:24:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-10-14 03:24:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1968. [2020-10-14 03:24:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2020-10-14 03:24:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2597 transitions. [2020-10-14 03:24:50,389 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2597 transitions. Word has length 96 [2020-10-14 03:24:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:50,390 INFO L479 AbstractCegarLoop]: Abstraction has 1968 states and 2597 transitions. [2020-10-14 03:24:50,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:50,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2597 transitions. [2020-10-14 03:24:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 03:24:50,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:50,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:50,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:24:50,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:50,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2050608062, now seen corresponding path program 1 times [2020-10-14 03:24:50,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:50,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900948854] [2020-10-14 03:24:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 03:24:51,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:24:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 03:24:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:24:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 03:24:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:52,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:24:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 03:24:52,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:52,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:24:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:52,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900948854] [2020-10-14 03:24:52,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:52,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:52,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534907286] [2020-10-14 03:24:52,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:52,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:52,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:52,103 INFO L87 Difference]: Start difference. First operand 1968 states and 2597 transitions. Second operand 5 states. [2020-10-14 03:25:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:04,573 INFO L93 Difference]: Finished difference Result 5797 states and 7763 transitions. [2020-10-14 03:25:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:04,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 03:25:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:04,599 INFO L225 Difference]: With dead ends: 5797 [2020-10-14 03:25:04,599 INFO L226 Difference]: Without dead ends: 3835 [2020-10-14 03:25:04,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:25:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2020-10-14 03:25:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3831. [2020-10-14 03:25:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3831 states. [2020-10-14 03:25:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4987 transitions. [2020-10-14 03:25:04,740 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4987 transitions. Word has length 136 [2020-10-14 03:25:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:04,742 INFO L479 AbstractCegarLoop]: Abstraction has 3831 states and 4987 transitions. [2020-10-14 03:25:04,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4987 transitions. [2020-10-14 03:25:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:25:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:04,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:04,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:25:04,745 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash -15478571, now seen corresponding path program 1 times [2020-10-14 03:25:04,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:04,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897298143] [2020-10-14 03:25:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:25:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-14 03:25:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:25:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:25:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:05,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:25:05,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:05,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:25:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 03:25:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:25:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:25:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:06,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897298143] [2020-10-14 03:25:06,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:06,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:25:06,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402348514] [2020-10-14 03:25:06,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:06,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:06,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:06,118 INFO L87 Difference]: Start difference. First operand 3831 states and 4987 transitions. Second operand 5 states. [2020-10-14 03:25:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:13,983 INFO L93 Difference]: Finished difference Result 8909 states and 12094 transitions. [2020-10-14 03:25:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:13,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:25:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:14,014 INFO L225 Difference]: With dead ends: 8909 [2020-10-14 03:25:14,015 INFO L226 Difference]: Without dead ends: 5084 [2020-10-14 03:25:14,027 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 [2020-10-14 03:25:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-14 03:25:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5078. [2020-10-14 03:25:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-10-14 03:25:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 6663 transitions. [2020-10-14 03:25:14,210 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 6663 transitions. Word has length 142 [2020-10-14 03:25:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 5078 states and 6663 transitions. [2020-10-14 03:25:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 6663 transitions. [2020-10-14 03:25:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 03:25:14,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:14,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:14,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:25:14,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:14,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash 511379345, now seen corresponding path program 1 times [2020-10-14 03:25:14,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:14,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655009780] [2020-10-14 03:25:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:15,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:25:15,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-14 03:25:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:15,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:25:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:25:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:15,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:25:15,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 03:25:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:15,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:25:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:15,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655009780] [2020-10-14 03:25:15,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:15,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:25:15,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416184958] [2020-10-14 03:25:15,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:15,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:15,610 INFO L87 Difference]: Start difference. First operand 5078 states and 6663 transitions. Second operand 5 states. [2020-10-14 03:25:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:25,503 INFO L93 Difference]: Finished difference Result 14801 states and 19922 transitions. [2020-10-14 03:25:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:25,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 03:25:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:25,554 INFO L225 Difference]: With dead ends: 14801 [2020-10-14 03:25:25,554 INFO L226 Difference]: Without dead ends: 9729 [2020-10-14 03:25:25,572 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 [2020-10-14 03:25:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2020-10-14 03:25:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9722. [2020-10-14 03:25:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9722 states. [2020-10-14 03:25:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 12720 transitions. [2020-10-14 03:25:25,843 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 12720 transitions. Word has length 156 [2020-10-14 03:25:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:25,843 INFO L479 AbstractCegarLoop]: Abstraction has 9722 states and 12720 transitions. [2020-10-14 03:25:25,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 12720 transitions. [2020-10-14 03:25:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 03:25:25,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:25,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:25,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:25:25,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash -68455085, now seen corresponding path program 1 times [2020-10-14 03:25:25,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:25,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127272544] [2020-10-14 03:25:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 03:25:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-14 03:25:26,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:25:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:25:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 03:25:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:25:26,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:25:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:25:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-14 03:25:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:27,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 03:25:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:27,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127272544] [2020-10-14 03:25:27,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:25:27,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:25:27,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452686355] [2020-10-14 03:25:27,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:27,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:27,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:27,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:27,495 INFO L87 Difference]: Start difference. First operand 9722 states and 12720 transitions. Second operand 7 states. [2020-10-14 03:25:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:35,969 INFO L93 Difference]: Finished difference Result 21962 states and 28803 transitions. [2020-10-14 03:25:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:35,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-14 03:25:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:36,018 INFO L225 Difference]: With dead ends: 21962 [2020-10-14 03:25:36,019 INFO L226 Difference]: Without dead ends: 12246 [2020-10-14 03:25:36,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:25:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12246 states. [2020-10-14 03:25:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12246 to 11323. [2020-10-14 03:25:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11323 states. [2020-10-14 03:25:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11323 states to 11323 states and 14583 transitions. [2020-10-14 03:25:36,302 INFO L78 Accepts]: Start accepts. Automaton has 11323 states and 14583 transitions. Word has length 198 [2020-10-14 03:25:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:36,303 INFO L479 AbstractCegarLoop]: Abstraction has 11323 states and 14583 transitions. [2020-10-14 03:25:36,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11323 states and 14583 transitions. [2020-10-14 03:25:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 03:25:36,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:36,311 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:36,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:25:36,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash -508617216, now seen corresponding path program 1 times [2020-10-14 03:25:36,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:36,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575418713] [2020-10-14 03:25:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:41,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:41,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 03:25:41,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:25:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 03:25:41,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:41,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:25:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:25:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:41,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:25:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:41,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:25:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 03:25:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:25:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:25:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:25:42,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 03:25:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:42,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:25:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 03:25:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:42,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:42,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:25:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 99 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:25:42,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575418713] [2020-10-14 03:25:42,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:42,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:42,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087654459] [2020-10-14 03:25:42,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:42,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:42,497 INFO L87 Difference]: Start difference. First operand 11323 states and 14583 transitions. Second operand 7 states. [2020-10-14 03:25:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:54,636 INFO L93 Difference]: Finished difference Result 27924 states and 39120 transitions. [2020-10-14 03:25:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:54,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-14 03:25:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:54,739 INFO L225 Difference]: With dead ends: 27924 [2020-10-14 03:25:54,739 INFO L226 Difference]: Without dead ends: 16607 [2020-10-14 03:25:54,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16607 states. [2020-10-14 03:25:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16607 to 16374. [2020-10-14 03:25:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16374 states. [2020-10-14 03:25:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16374 states to 16374 states and 21115 transitions. [2020-10-14 03:25:55,326 INFO L78 Accepts]: Start accepts. Automaton has 16374 states and 21115 transitions. Word has length 369 [2020-10-14 03:25:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:55,327 INFO L479 AbstractCegarLoop]: Abstraction has 16374 states and 21115 transitions. [2020-10-14 03:25:55,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16374 states and 21115 transitions. [2020-10-14 03:25:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 03:25:55,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:55,338 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:55,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:25:55,338 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 836115338, now seen corresponding path program 1 times [2020-10-14 03:25:55,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:55,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306259203] [2020-10-14 03:25:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-14 03:26:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 03:26:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:00,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:26:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:26:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:26:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:00,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:00,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:26:00,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 03:26:00,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:00,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:26:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:26:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:26:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:26:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:26:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:26:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:26:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 03:26:01,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:26:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 103 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:26:01,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306259203] [2020-10-14 03:26:01,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:01,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:01,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442547590] [2020-10-14 03:26:01,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:01,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:01,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:01,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:01,696 INFO L87 Difference]: Start difference. First operand 16374 states and 21115 transitions. Second operand 7 states. [2020-10-14 03:26:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:12,310 INFO L93 Difference]: Finished difference Result 35980 states and 48390 transitions. [2020-10-14 03:26:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:26:12,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-14 03:26:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:12,398 INFO L225 Difference]: With dead ends: 35980 [2020-10-14 03:26:12,398 INFO L226 Difference]: Without dead ends: 19612 [2020-10-14 03:26:12,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19612 states. [2020-10-14 03:26:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19612 to 19288. [2020-10-14 03:26:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19288 states. [2020-10-14 03:26:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19288 states to 19288 states and 25824 transitions. [2020-10-14 03:26:12,895 INFO L78 Accepts]: Start accepts. Automaton has 19288 states and 25824 transitions. Word has length 375 [2020-10-14 03:26:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:12,896 INFO L479 AbstractCegarLoop]: Abstraction has 19288 states and 25824 transitions. [2020-10-14 03:26:12,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 19288 states and 25824 transitions. [2020-10-14 03:26:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 03:26:12,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:12,910 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:12,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:26:12,910 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash 630800472, now seen corresponding path program 1 times [2020-10-14 03:26:12,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:12,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979532107] [2020-10-14 03:26:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:18,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:18,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:18,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:26:18,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:18,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:26:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:26:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:26:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:18,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 03:26:18,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:18,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:18,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:26:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:26:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:26:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:19,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:26:19,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 03:26:19,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:19,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:26:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:26:19,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979532107] [2020-10-14 03:26:19,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:19,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:19,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691196290] [2020-10-14 03:26:19,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:19,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:19,658 INFO L87 Difference]: Start difference. First operand 19288 states and 25824 transitions. Second operand 7 states. [2020-10-14 03:26:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:33,305 INFO L93 Difference]: Finished difference Result 38616 states and 51883 transitions. [2020-10-14 03:26:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:33,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-14 03:26:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:33,376 INFO L225 Difference]: With dead ends: 38616 [2020-10-14 03:26:33,376 INFO L226 Difference]: Without dead ends: 19334 [2020-10-14 03:26:33,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19334 states. [2020-10-14 03:26:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19334 to 19324. [2020-10-14 03:26:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19324 states. [2020-10-14 03:26:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 24964 transitions. [2020-10-14 03:26:33,951 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 24964 transitions. Word has length 448 [2020-10-14 03:26:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:33,952 INFO L479 AbstractCegarLoop]: Abstraction has 19324 states and 24964 transitions. [2020-10-14 03:26:33,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 24964 transitions. [2020-10-14 03:26:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-14 03:26:33,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:33,974 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:26:33,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:26:33,975 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1071797256, now seen corresponding path program 1 times [2020-10-14 03:26:33,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:33,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724073386] [2020-10-14 03:26:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:37,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-14 03:26:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 03:26:39,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-14 03:26:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 03:26:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:26:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:26:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:26:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:39,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 03:26:39,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:26:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:26:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 03:26:39,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 03:26:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:26:40,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724073386] [2020-10-14 03:26:40,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:40,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:40,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631247597] [2020-10-14 03:26:40,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:40,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:40,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:40,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:40,223 INFO L87 Difference]: Start difference. First operand 19324 states and 24964 transitions. Second operand 7 states. [2020-10-14 03:26:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:55,371 INFO L93 Difference]: Finished difference Result 51078 states and 66824 transitions. [2020-10-14 03:26:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:55,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-14 03:26:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:55,492 INFO L225 Difference]: With dead ends: 51078 [2020-10-14 03:26:55,492 INFO L226 Difference]: Without dead ends: 31438 [2020-10-14 03:26:55,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31438 states. [2020-10-14 03:26:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31438 to 24364. [2020-10-14 03:26:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24364 states. [2020-10-14 03:26:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24364 states to 24364 states and 30781 transitions. [2020-10-14 03:26:56,140 INFO L78 Accepts]: Start accepts. Automaton has 24364 states and 30781 transitions. Word has length 513 [2020-10-14 03:26:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:56,142 INFO L479 AbstractCegarLoop]: Abstraction has 24364 states and 30781 transitions. [2020-10-14 03:26:56,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 24364 states and 30781 transitions. [2020-10-14 03:26:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-14 03:26:56,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:56,155 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:26:56,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:26:56,156 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash 442164540, now seen corresponding path program 1 times [2020-10-14 03:26:56,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:56,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393525073] [2020-10-14 03:26:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-14 03:27:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:27:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:01,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:01,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 03:27:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:27:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:01,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:27:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-10-14 03:27:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:27:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:27:02,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:02,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:27:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 191 proven. 75 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-14 03:27:02,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393525073] [2020-10-14 03:27:02,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:02,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:02,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424391160] [2020-10-14 03:27:02,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:02,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:02,345 INFO L87 Difference]: Start difference. First operand 24364 states and 30781 transitions. Second operand 7 states. [2020-10-14 03:27:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:13,663 INFO L93 Difference]: Finished difference Result 50609 states and 63861 transitions. [2020-10-14 03:27:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:27:13,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-14 03:27:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:13,727 INFO L225 Difference]: With dead ends: 50609 [2020-10-14 03:27:13,727 INFO L226 Difference]: Without dead ends: 26251 [2020-10-14 03:27:13,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:27:13,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26251 states. [2020-10-14 03:27:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26251 to 25923. [2020-10-14 03:27:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25923 states. [2020-10-14 03:27:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25923 states to 25923 states and 32531 transitions. [2020-10-14 03:27:14,157 INFO L78 Accepts]: Start accepts. Automaton has 25923 states and 32531 transitions. Word has length 537 [2020-10-14 03:27:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:14,158 INFO L479 AbstractCegarLoop]: Abstraction has 25923 states and 32531 transitions. [2020-10-14 03:27:14,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25923 states and 32531 transitions. [2020-10-14 03:27:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-14 03:27:14,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:14,170 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:27:14,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:27:14,170 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash -921222912, now seen corresponding path program 1 times [2020-10-14 03:27:14,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:14,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335962932] [2020-10-14 03:27:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 03:27:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:27:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 03:27:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-14 03:27:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:27:20,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:27:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:20,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 03:27:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-14 03:27:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:27:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:27:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:27:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 222 proven. 152 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 03:27:20,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335962932] [2020-10-14 03:27:20,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:20,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:27:20,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493397492] [2020-10-14 03:27:20,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:27:20,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:27:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:27:20,504 INFO L87 Difference]: Start difference. First operand 25923 states and 32531 transitions. Second operand 8 states. [2020-10-14 03:27:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:37,284 INFO L93 Difference]: Finished difference Result 53411 states and 67238 transitions. [2020-10-14 03:27:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:27:37,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 562 [2020-10-14 03:27:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:37,359 INFO L225 Difference]: With dead ends: 53411 [2020-10-14 03:27:37,359 INFO L226 Difference]: Without dead ends: 27494 [2020-10-14 03:27:37,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:27:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27494 states. [2020-10-14 03:27:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27494 to 26858. [2020-10-14 03:27:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26858 states. [2020-10-14 03:27:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26858 states to 26858 states and 33721 transitions. [2020-10-14 03:27:37,853 INFO L78 Accepts]: Start accepts. Automaton has 26858 states and 33721 transitions. Word has length 562 [2020-10-14 03:27:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:37,854 INFO L479 AbstractCegarLoop]: Abstraction has 26858 states and 33721 transitions. [2020-10-14 03:27:37,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:27:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 26858 states and 33721 transitions. [2020-10-14 03:27:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-10-14 03:27:37,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:37,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:37,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:27:37,866 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:37,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1554923187, now seen corresponding path program 1 times [2020-10-14 03:27:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:37,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420439339] [2020-10-14 03:27:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 605 [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 513 [2020-10-14 03:27:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:27:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:27:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:27:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:27:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:27:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-14 03:27:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:27:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-14 03:27:43,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420439339] [2020-10-14 03:27:43,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:43,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:43,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505751452] [2020-10-14 03:27:43,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:43,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:43,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:43,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:43,912 INFO L87 Difference]: Start difference. First operand 26858 states and 33721 transitions. Second operand 7 states.