/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/Problem17_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:02:52,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:02:52,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:02:52,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:02:52,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:02:52,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:02:52,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:02:52,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:02:52,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:02:52,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:02:52,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:02:52,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:02:52,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:02:52,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:02:52,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:02:52,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:02:52,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:02:52,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:02:52,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:02:52,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:02:52,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:02:52,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:02:52,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:02:52,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:02:52,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:02:52,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:02:52,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:02:52,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:02:52,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:02:52,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:02:52,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:02:52,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:02:52,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:02:52,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:02:52,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:02:52,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:02:52,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:02:52,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:02:52,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:02:52,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:02:52,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:02:52,390 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 04:02:52,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:02:52,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:02:52,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:02:52,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:02:52,413 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:02:52,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:02:52,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:02:52,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:02:52,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:02:52,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:02:52,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:02:52,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:02:52,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:02:52,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:02:52,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:02:52,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:02:52,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:02:52,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:02:52,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:02:52,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:02:52,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:02:52,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:02:52,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:02:52,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:02:52,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:02:52,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:02:52,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:02:52,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:02:52,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:02:52,418 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 04:02:52,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:02:52,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:02:52,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:02:52,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:02:52,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:02:52,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-14 04:02:52,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874bac110/064e810d09d241ee95edda1a913232e8/FLAGb77f9b11a [2020-10-14 04:02:53,547 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:02:53,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-14 04:02:53,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874bac110/064e810d09d241ee95edda1a913232e8/FLAGb77f9b11a [2020-10-14 04:02:53,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874bac110/064e810d09d241ee95edda1a913232e8 [2020-10-14 04:02:53,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:02:53,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:02:53,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:53,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:02:53,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:02:53,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:53" (1/1) ... [2020-10-14 04:02:53,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0c35a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:53, skipping insertion in model container [2020-10-14 04:02:53,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:53" (1/1) ... [2020-10-14 04:02:53,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:02:53,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:02:55,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:55,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:02:55,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:55,643 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:02:55,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55 WrapperNode [2020-10-14 04:02:55,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:55,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:02:55,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:02:55,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:02:55,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (1/1) ... [2020-10-14 04:02:55,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:02:55,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:02:55,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:02:55,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:02:55,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (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 04:02:56,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:02:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:02:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:02:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:02:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:02:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:02:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:02:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:02:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:02:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:02:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:02:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:02:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:03:04,627 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:03:04,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:03:04,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:03:04 BoogieIcfgContainer [2020-10-14 04:03:04,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:03:04,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:03:04,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:03:04,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:03:04,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:02:53" (1/3) ... [2020-10-14 04:03:04,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edc0759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:03:04, skipping insertion in model container [2020-10-14 04:03:04,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:55" (2/3) ... [2020-10-14 04:03:04,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edc0759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:03:04, skipping insertion in model container [2020-10-14 04:03:04,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:03:04" (3/3) ... [2020-10-14 04:03:04,647 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label36.c [2020-10-14 04:03:04,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:03:04,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:03:04,681 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:03:04,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:03:04,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:03:04,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:03:04,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:03:04,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:03:04,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:03:04,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:03:04,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:03:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:03:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 04:03:04,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:04,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:04,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:04,767 INFO L82 PathProgramCache]: Analyzing trace with hash 301890441, now seen corresponding path program 1 times [2020-10-14 04:03:04,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:04,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042927724] [2020-10-14 04:03:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:05,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:03:05,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 04:03:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:03:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:03:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:03:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:03:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:05,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:05,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:03:05,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:05,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:03:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:05,623 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 04:03:05,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042927724] [2020-10-14 04:03:05,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:03:05,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:03:05,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142224356] [2020-10-14 04:03:05,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:03:05,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:03:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:03:05,657 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:03:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:17,693 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:03:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:17,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 04:03:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:17,723 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:03:17,724 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:03:17,743 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 04:03:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:03:17,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:03:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:03:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:03:17,869 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 63 [2020-10-14 04:03:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:17,870 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:03:17,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:03:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:03:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:03:17,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:17,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:03:17,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:03:17,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:17,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:17,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1298338945, now seen corresponding path program 1 times [2020-10-14 04:03:17,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:17,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814522659] [2020-10-14 04:03:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:20,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:03:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-14 04:03:20,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:20,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:03:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:03:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:20,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:20,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:20,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:20,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:03:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:03:21,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:21,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:03:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814522659] [2020-10-14 04:03:21,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618670132] [2020-10-14 04:03:21,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:21,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:21,060 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:03:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:37,247 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:03:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:37,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 04:03:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:37,263 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:03:37,264 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:03:37,268 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 04:03:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:03:37,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:03:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:03:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:03:37,349 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 134 [2020-10-14 04:03:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:37,354 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:03:37,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:03:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:03:37,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:37,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 04:03:37,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:03:37,368 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:37,368 INFO L82 PathProgramCache]: Analyzing trace with hash 826911249, now seen corresponding path program 1 times [2020-10-14 04:03:37,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:37,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889639028] [2020-10-14 04:03:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:03:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:03:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3216 [2020-10-14 04:03:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:03:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:03:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:40,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:03:40,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:03:40,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 04:03:40,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:03:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:41,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889639028] [2020-10-14 04:03:41,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:41,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:41,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911048840] [2020-10-14 04:03:41,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:41,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:41,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:41,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:41,039 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:03:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:55,171 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:03:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:55,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:03:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:55,188 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:03:55,189 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:03:55,194 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 04:03:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:03:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:03:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:03:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-14 04:03:55,262 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 137 [2020-10-14 04:03:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:55,263 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-14 04:03:55,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-14 04:03:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 04:03:55,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:55,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:03:55,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:03:55,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:55,267 INFO L82 PathProgramCache]: Analyzing trace with hash -90596721, now seen corresponding path program 1 times [2020-10-14 04:03:55,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:55,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573143098] [2020-10-14 04:03:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:55,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 04:03:56,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:03:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-14 04:03:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:56,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:03:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:03:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:03:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:56,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:56,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:03:56,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:03:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:03:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:56,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573143098] [2020-10-14 04:03:56,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:56,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:56,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215526896] [2020-10-14 04:03:56,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:56,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:56,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:56,716 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 5 states. [2020-10-14 04:04:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:08,161 INFO L93 Difference]: Finished difference Result 6454 states and 8792 transitions. [2020-10-14 04:04:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:08,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 04:04:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:08,191 INFO L225 Difference]: With dead ends: 6454 [2020-10-14 04:04:08,192 INFO L226 Difference]: Without dead ends: 3685 [2020-10-14 04:04:08,199 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 04:04:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-14 04:04:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3672. [2020-10-14 04:04:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 04:04:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4859 transitions. [2020-10-14 04:04:08,314 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4859 transitions. Word has length 142 [2020-10-14 04:04:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:08,314 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4859 transitions. [2020-10-14 04:04:08,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4859 transitions. [2020-10-14 04:04:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 04:04:08,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:08,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:08,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:04:08,318 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:08,319 INFO L82 PathProgramCache]: Analyzing trace with hash -202480521, now seen corresponding path program 1 times [2020-10-14 04:04:08,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:08,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48915872] [2020-10-14 04:04:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:04:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:04:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-14 04:04:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:09,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:04:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:04:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:10,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:04:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:10,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:10,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:10,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:10,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:04:10,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:10,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:04:10,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:10,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:04:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:10,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48915872] [2020-10-14 04:04:10,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:10,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:10,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275507512] [2020-10-14 04:04:10,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:10,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:10,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:10,260 INFO L87 Difference]: Start difference. First operand 3672 states and 4859 transitions. Second operand 5 states. [2020-10-14 04:04:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:27,199 INFO L93 Difference]: Finished difference Result 10852 states and 14576 transitions. [2020-10-14 04:04:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:27,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 04:04:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:27,248 INFO L225 Difference]: With dead ends: 10852 [2020-10-14 04:04:27,249 INFO L226 Difference]: Without dead ends: 7186 [2020-10-14 04:04:27,259 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 04:04:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2020-10-14 04:04:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 5445. [2020-10-14 04:04:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5445 states. [2020-10-14 04:04:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 7557 transitions. [2020-10-14 04:04:27,439 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 7557 transitions. Word has length 165 [2020-10-14 04:04:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:27,439 INFO L479 AbstractCegarLoop]: Abstraction has 5445 states and 7557 transitions. [2020-10-14 04:04:27,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 7557 transitions. [2020-10-14 04:04:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 04:04:27,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:27,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:04:27,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:04:27,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:27,447 INFO L82 PathProgramCache]: Analyzing trace with hash 892743551, now seen corresponding path program 1 times [2020-10-14 04:04:27,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:27,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180772010] [2020-10-14 04:04:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:04:32,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:04:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 04:04:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:32,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:04:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:04:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:32,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:32,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:32,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:04:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:32,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:32,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:32,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:04:32,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:04:32,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:32,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:04:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:04:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:33,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:04:33,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 04:04:33,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:33,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:04:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:04:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:04:33,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180772010] [2020-10-14 04:04:33,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:33,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:04:33,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134197616] [2020-10-14 04:04:33,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:04:33,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:33,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:04:33,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:04:33,278 INFO L87 Difference]: Start difference. First operand 5445 states and 7557 transitions. Second operand 8 states. [2020-10-14 04:04:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:55,627 INFO L93 Difference]: Finished difference Result 17103 states and 23936 transitions. [2020-10-14 04:04:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:04:55,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-14 04:04:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:55,674 INFO L225 Difference]: With dead ends: 17103 [2020-10-14 04:04:55,674 INFO L226 Difference]: Without dead ends: 10335 [2020-10-14 04:04:55,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:04:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10335 states. [2020-10-14 04:04:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10335 to 9897. [2020-10-14 04:04:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9897 states. [2020-10-14 04:04:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9897 states to 9897 states and 12127 transitions. [2020-10-14 04:04:55,952 INFO L78 Accepts]: Start accepts. Automaton has 9897 states and 12127 transitions. Word has length 212 [2020-10-14 04:04:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:55,952 INFO L479 AbstractCegarLoop]: Abstraction has 9897 states and 12127 transitions. [2020-10-14 04:04:55,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:04:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9897 states and 12127 transitions. [2020-10-14 04:04:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 04:04:55,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:55,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:04:55,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:04:55,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash -399722575, now seen corresponding path program 1 times [2020-10-14 04:04:55,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011386199] [2020-10-14 04:04:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:00,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 04:05:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:05:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-14 04:05:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:00,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:05:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:05:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:00,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:00,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:05:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:00,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:00,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:05:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:00,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:05:00,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:05:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:00,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:05:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:05:00,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011386199] [2020-10-14 04:05:00,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:00,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:00,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215876511] [2020-10-14 04:05:00,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:00,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:00,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:00,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:00,623 INFO L87 Difference]: Start difference. First operand 9897 states and 12127 transitions. Second operand 5 states. [2020-10-14 04:05:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:16,980 INFO L93 Difference]: Finished difference Result 23757 states and 29645 transitions. [2020-10-14 04:05:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:16,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-14 04:05:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:17,037 INFO L225 Difference]: With dead ends: 23757 [2020-10-14 04:05:17,037 INFO L226 Difference]: Without dead ends: 13865 [2020-10-14 04:05:17,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:17,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2020-10-14 04:05:17,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 12559. [2020-10-14 04:05:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12559 states. [2020-10-14 04:05:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12559 states to 12559 states and 15273 transitions. [2020-10-14 04:05:17,354 INFO L78 Accepts]: Start accepts. Automaton has 12559 states and 15273 transitions. Word has length 225 [2020-10-14 04:05:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:17,355 INFO L479 AbstractCegarLoop]: Abstraction has 12559 states and 15273 transitions. [2020-10-14 04:05:17,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12559 states and 15273 transitions. [2020-10-14 04:05:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 04:05:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:17,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 04:05:17,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:05:17,364 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:17,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1738349804, now seen corresponding path program 1 times [2020-10-14 04:05:17,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:17,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863105073] [2020-10-14 04:05:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 04:05:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:05:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3248 [2020-10-14 04:05:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:20,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:05:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 04:05:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:05:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:20,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:20,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:20,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 04:05:21,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:21,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:05:21,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 04:05:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 04:05:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:21,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 04:05:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:05:21,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863105073] [2020-10-14 04:05:21,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:21,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:21,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910480702] [2020-10-14 04:05:21,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:21,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:21,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:21,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:21,613 INFO L87 Difference]: Start difference. First operand 12559 states and 15273 transitions. Second operand 7 states. [2020-10-14 04:05:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:37,109 INFO L93 Difference]: Finished difference Result 24705 states and 30120 transitions. [2020-10-14 04:05:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:05:37,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 04:05:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:37,163 INFO L225 Difference]: With dead ends: 24705 [2020-10-14 04:05:37,163 INFO L226 Difference]: Without dead ends: 11696 [2020-10-14 04:05:37,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:05:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2020-10-14 04:05:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 11245. [2020-10-14 04:05:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11245 states. [2020-10-14 04:05:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11245 states to 11245 states and 13009 transitions. [2020-10-14 04:05:37,594 INFO L78 Accepts]: Start accepts. Automaton has 11245 states and 13009 transitions. Word has length 271 [2020-10-14 04:05:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:37,595 INFO L479 AbstractCegarLoop]: Abstraction has 11245 states and 13009 transitions. [2020-10-14 04:05:37,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:05:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11245 states and 13009 transitions. [2020-10-14 04:05:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 04:05:37,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:37,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 04:05:37,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:05:37,610 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 53907303, now seen corresponding path program 1 times [2020-10-14 04:05:37,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:37,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576950068] [2020-10-14 04:05:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:41,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:41,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-14 04:05:41,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:05:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-14 04:05:41,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:41,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:05:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:05:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:05:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:41,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:41,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:41,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:05:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:41,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:41,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:41,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:41,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:41,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:05:41,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:41,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:05:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:41,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:41,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:05:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 04:05:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:41,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:05:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:05:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:41,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:41,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:05:41,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:05:41,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:41,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:05:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 256 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 04:05:42,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576950068] [2020-10-14 04:05:42,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:42,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:42,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413770614] [2020-10-14 04:05:42,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:42,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:42,178 INFO L87 Difference]: Start difference. First operand 11245 states and 13009 transitions. Second operand 7 states. [2020-10-14 04:06:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:00,372 INFO L93 Difference]: Finished difference Result 23974 states and 27848 transitions. [2020-10-14 04:06:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:06:00,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-14 04:06:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:00,427 INFO L225 Difference]: With dead ends: 23974 [2020-10-14 04:06:00,427 INFO L226 Difference]: Without dead ends: 12735 [2020-10-14 04:06:00,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:06:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2020-10-14 04:06:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 12709. [2020-10-14 04:06:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12709 states. [2020-10-14 04:06:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 14773 transitions. [2020-10-14 04:06:00,710 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 14773 transitions. Word has length 347 [2020-10-14 04:06:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:00,711 INFO L479 AbstractCegarLoop]: Abstraction has 12709 states and 14773 transitions. [2020-10-14 04:06:00,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:06:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 14773 transitions. [2020-10-14 04:06:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-14 04:06:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:00,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:06:00,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:06:00,724 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:00,725 INFO L82 PathProgramCache]: Analyzing trace with hash -331811678, now seen corresponding path program 1 times [2020-10-14 04:06:00,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:00,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426491754] [2020-10-14 04:06:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:05,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:05,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 04:06:05,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:06:05,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 04:06:05,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:05,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:06:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 04:06:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:06:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:06:06,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:06:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:06:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:06:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:06:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:06:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:06:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 04:06:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:06:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:06:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 04:06:06,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426491754] [2020-10-14 04:06:06,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:06,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:06:06,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770077234] [2020-10-14 04:06:06,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:06:06,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:06:06,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:06:06,498 INFO L87 Difference]: Start difference. First operand 12709 states and 14773 transitions. Second operand 6 states. [2020-10-14 04:06:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:17,273 INFO L93 Difference]: Finished difference Result 25391 states and 29564 transitions. [2020-10-14 04:06:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:17,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 373 [2020-10-14 04:06:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:17,323 INFO L225 Difference]: With dead ends: 25391 [2020-10-14 04:06:17,324 INFO L226 Difference]: Without dead ends: 12688 [2020-10-14 04:06:17,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:06:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2020-10-14 04:06:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12678. [2020-10-14 04:06:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12678 states. [2020-10-14 04:06:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12678 states to 12678 states and 14711 transitions. [2020-10-14 04:06:17,613 INFO L78 Accepts]: Start accepts. Automaton has 12678 states and 14711 transitions. Word has length 373 [2020-10-14 04:06:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:17,615 INFO L479 AbstractCegarLoop]: Abstraction has 12678 states and 14711 transitions. [2020-10-14 04:06:17,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:06:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12678 states and 14711 transitions. [2020-10-14 04:06:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 04:06:17,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:17,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 04:06:17,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:06:17,632 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:17,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1878081631, now seen corresponding path program 1 times [2020-10-14 04:06:17,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:17,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282266290] [2020-10-14 04:06:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 04:06:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:06:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 04:06:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:22,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-14 04:06:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:06:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:22,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:22,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:22,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:22,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:22,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:22,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:06:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:06:23,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:23,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:23,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:06:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:23,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:23,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:06:23,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:23,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:06:23,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:23,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:23,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:23,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 04:06:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:06:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 04:06:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:23,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:06:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:06:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:06:23,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282266290] [2020-10-14 04:06:23,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:23,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:06:23,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653092815] [2020-10-14 04:06:23,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:06:23,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:23,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:06:23,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:06:23,494 INFO L87 Difference]: Start difference. First operand 12678 states and 14711 transitions. Second operand 7 states.