/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:14:55,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:14:55,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:14:55,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:14:55,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:14:55,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:14:55,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:14:55,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:14:55,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:14:55,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:14:55,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:14:55,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:14:55,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:14:55,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:14:55,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:14:55,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:14:55,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:14:55,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:14:55,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:14:55,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:14:55,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:14:55,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:14:55,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:14:55,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:14:55,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:14:55,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:14:55,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:14:55,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:14:55,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:14:55,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:14:55,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:14:55,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:14:55,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:14:55,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:14:55,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:14:55,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:14:55,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:14:55,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:14:55,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:14:55,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:14:55,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:14:55,639 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 21:14:55,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:14:55,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:14:55,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:14:55,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:14:55,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:14:55,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:14:55,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:14:55,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:14:55,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:14:55,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:14:55,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:14:55,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:14:55,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:14:55,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:14:55,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:14:55,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:14:55,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:14:55,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:14:55,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:14:55,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:14:55,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:14:55,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:14:55,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:14:55,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:14:55,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:14:55,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:14:55,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:14:55,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:14:55,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:14:55,669 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:14:56,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:14:56,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:14:56,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:14:56,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:14:56,022 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:14:56,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39.c [2020-10-14 21:14:56,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdfcb197/a4b6cbbfe5394c689b33b1b92dd776aa/FLAG6ae92e241 [2020-10-14 21:14:56,901 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:14:56,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label39.c [2020-10-14 21:14:56,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdfcb197/a4b6cbbfe5394c689b33b1b92dd776aa/FLAG6ae92e241 [2020-10-14 21:14:56,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdfcb197/a4b6cbbfe5394c689b33b1b92dd776aa [2020-10-14 21:14:57,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:14:57,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:14:57,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:57,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:14:57,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:14:57,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:56" (1/1) ... [2020-10-14 21:14:57,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:57, skipping insertion in model container [2020-10-14 21:14:57,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:56" (1/1) ... [2020-10-14 21:14:57,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:14:57,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:14:58,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:58,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:14:59,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:59,389 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:14:59,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59 WrapperNode [2020-10-14 21:14:59,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:59,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:14:59,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:14:59,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:14:59,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (1/1) ... [2020-10-14 21:14:59,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:14:59,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:14:59,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:14:59,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:14:59,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (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 21:14:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:14:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:14:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:14:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:14:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:14:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:14:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:14:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:14:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:14:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:14:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:14:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:15:04,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:15:04,915 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:15:04,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:04 BoogieIcfgContainer [2020-10-14 21:15:04,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:15:04,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:15:04,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:15:04,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:15:04,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:56" (1/3) ... [2020-10-14 21:15:04,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9a27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:04, skipping insertion in model container [2020-10-14 21:15:04,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:59" (2/3) ... [2020-10-14 21:15:04,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9a27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:04, skipping insertion in model container [2020-10-14 21:15:04,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:04" (3/3) ... [2020-10-14 21:15:04,942 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label39.c [2020-10-14 21:15:04,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:15:04,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:15:04,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:15:05,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:15:05,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:15:05,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:15:05,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:15:05,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:15:05,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:15:05,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:15:05,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:15:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:15:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 21:15:05,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:05,073 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] [2020-10-14 21:15:05,074 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1239669250, now seen corresponding path program 1 times [2020-10-14 21:15:05,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:05,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140931894] [2020-10-14 21:15:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:05,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:05,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 21:15:05,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 21:15:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:05,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 21:15:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:15:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:15:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:05,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:05,952 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 21:15:05,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140931894] [2020-10-14 21:15:05,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:05,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:15:05,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711435974] [2020-10-14 21:15:05,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:15:05,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:05,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:15:05,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:15:05,985 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:15:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:15,606 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 21:15:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:15:15,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 21:15:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:15,640 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 21:15:15,641 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:15:15,652 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 21:15:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:15:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 21:15:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 21:15:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 21:15:15,826 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 27 [2020-10-14 21:15:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:15,828 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 21:15:15,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:15:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 21:15:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 21:15:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:15,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:15,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:15:15,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash 784342851, now seen corresponding path program 1 times [2020-10-14 21:15:15,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:15,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885391726] [2020-10-14 21:15:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:15:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-14 21:15:17,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:17,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:15:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:17,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:17,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:15:17,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:17,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:17,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:15:17,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:15:17,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:17,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:15:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:15:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:17,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885391726] [2020-10-14 21:15:17,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:17,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:17,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604816110] [2020-10-14 21:15:17,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:17,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:17,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:17,615 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-14 21:15:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:30,947 INFO L93 Difference]: Finished difference Result 4768 states and 7606 transitions. [2020-10-14 21:15:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:15:30,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-14 21:15:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:30,970 INFO L225 Difference]: With dead ends: 4768 [2020-10-14 21:15:30,970 INFO L226 Difference]: Without dead ends: 3210 [2020-10-14 21:15:30,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2020-10-14 21:15:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3163. [2020-10-14 21:15:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-14 21:15:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4586 transitions. [2020-10-14 21:15:31,088 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4586 transitions. Word has length 106 [2020-10-14 21:15:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:31,092 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4586 transitions. [2020-10-14 21:15:31,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4586 transitions. [2020-10-14 21:15:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 21:15:31,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:31,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:31,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:15:31,097 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:31,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash -18689898, now seen corresponding path program 1 times [2020-10-14 21:15:31,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:31,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338644429] [2020-10-14 21:15:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 21:15:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1382 [2020-10-14 21:15:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:15:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:15:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:15:32,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 21:15:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:15:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:33,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338644429] [2020-10-14 21:15:33,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:33,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:33,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144998609] [2020-10-14 21:15:33,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:33,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:33,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:33,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:33,059 INFO L87 Difference]: Start difference. First operand 3163 states and 4586 transitions. Second operand 7 states. [2020-10-14 21:15:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:47,668 INFO L93 Difference]: Finished difference Result 9818 states and 14981 transitions. [2020-10-14 21:15:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:47,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 21:15:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:47,723 INFO L225 Difference]: With dead ends: 9818 [2020-10-14 21:15:47,723 INFO L226 Difference]: Without dead ends: 6661 [2020-10-14 21:15:47,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2020-10-14 21:15:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 6497. [2020-10-14 21:15:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-10-14 21:15:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 9122 transitions. [2020-10-14 21:15:47,996 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 9122 transitions. Word has length 135 [2020-10-14 21:15:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:47,997 INFO L479 AbstractCegarLoop]: Abstraction has 6497 states and 9122 transitions. [2020-10-14 21:15:47,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 9122 transitions. [2020-10-14 21:15:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 21:15:48,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:48,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:48,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:15:48,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:48,002 INFO L82 PathProgramCache]: Analyzing trace with hash 459564910, now seen corresponding path program 1 times [2020-10-14 21:15:48,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:48,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212979764] [2020-10-14 21:15:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 21:15:49,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-14 21:15:49,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:15:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:15:49,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:49,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:15:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:15:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:15:49,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:15:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:49,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212979764] [2020-10-14 21:15:49,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:49,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:49,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820230316] [2020-10-14 21:15:49,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:49,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:49,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:49,771 INFO L87 Difference]: Start difference. First operand 6497 states and 9122 transitions. Second operand 7 states. [2020-10-14 21:16:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:03,333 INFO L93 Difference]: Finished difference Result 20134 states and 29404 transitions. [2020-10-14 21:16:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:03,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-14 21:16:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:03,417 INFO L225 Difference]: With dead ends: 20134 [2020-10-14 21:16:03,417 INFO L226 Difference]: Without dead ends: 13643 [2020-10-14 21:16:03,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13643 states. [2020-10-14 21:16:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13643 to 13373. [2020-10-14 21:16:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13373 states. [2020-10-14 21:16:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 17894 transitions. [2020-10-14 21:16:03,920 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 17894 transitions. Word has length 147 [2020-10-14 21:16:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:03,922 INFO L479 AbstractCegarLoop]: Abstraction has 13373 states and 17894 transitions. [2020-10-14 21:16:03,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 17894 transitions. [2020-10-14 21:16:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 21:16:03,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:03,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:03,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:16:03,930 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1914840934, now seen corresponding path program 1 times [2020-10-14 21:16:03,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:03,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074396654] [2020-10-14 21:16:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:04,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:06,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 21:16:06,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2119 [2020-10-14 21:16:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:06,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:16:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:16:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:06,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:06,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:06,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:06,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:16:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 21:16:06,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:06,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:16:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:16:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:07,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074396654] [2020-10-14 21:16:07,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:07,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:16:07,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61838210] [2020-10-14 21:16:07,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:16:07,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:16:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:07,121 INFO L87 Difference]: Start difference. First operand 13373 states and 17894 transitions. Second operand 8 states. [2020-10-14 21:16:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:29,583 INFO L93 Difference]: Finished difference Result 40082 states and 52950 transitions. [2020-10-14 21:16:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:16:29,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-10-14 21:16:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:29,694 INFO L225 Difference]: With dead ends: 40082 [2020-10-14 21:16:29,696 INFO L226 Difference]: Without dead ends: 26715 [2020-10-14 21:16:29,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 21:16:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26715 states. [2020-10-14 21:16:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26715 to 24835. [2020-10-14 21:16:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24835 states. [2020-10-14 21:16:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24835 states to 24835 states and 31299 transitions. [2020-10-14 21:16:30,435 INFO L78 Accepts]: Start accepts. Automaton has 24835 states and 31299 transitions. Word has length 175 [2020-10-14 21:16:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:30,436 INFO L479 AbstractCegarLoop]: Abstraction has 24835 states and 31299 transitions. [2020-10-14 21:16:30,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:16:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24835 states and 31299 transitions. [2020-10-14 21:16:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 21:16:30,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:30,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:30,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:16:30,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2078054858, now seen corresponding path program 1 times [2020-10-14 21:16:30,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:30,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274964115] [2020-10-14 21:16:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 21:16:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-14 21:16:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:16:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:16:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:31,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:16:31,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:31,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:31,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:16:31,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:16:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:16:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:16:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:16:33,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274964115] [2020-10-14 21:16:33,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:33,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:33,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138376477] [2020-10-14 21:16:33,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:33,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:33,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:33,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:33,062 INFO L87 Difference]: Start difference. First operand 24835 states and 31299 transitions. Second operand 7 states. [2020-10-14 21:16:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:59,858 INFO L93 Difference]: Finished difference Result 57640 states and 76246 transitions. [2020-10-14 21:16:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:16:59,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 21:16:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:00,062 INFO L225 Difference]: With dead ends: 57640 [2020-10-14 21:17:00,062 INFO L226 Difference]: Without dead ends: 32811 [2020-10-14 21:17:00,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32811 states. [2020-10-14 21:17:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32811 to 31544. [2020-10-14 21:17:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31544 states. [2020-10-14 21:17:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31544 states to 31544 states and 42270 transitions. [2020-10-14 21:17:01,195 INFO L78 Accepts]: Start accepts. Automaton has 31544 states and 42270 transitions. Word has length 247 [2020-10-14 21:17:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:01,197 INFO L479 AbstractCegarLoop]: Abstraction has 31544 states and 42270 transitions. [2020-10-14 21:17:01,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31544 states and 42270 transitions. [2020-10-14 21:17:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 21:17:01,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:01,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:01,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:17:01,203 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:01,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2002593759, now seen corresponding path program 1 times [2020-10-14 21:17:01,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:01,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278052193] [2020-10-14 21:17:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:04,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 21:17:04,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3495 [2020-10-14 21:17:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:04,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:17:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:17:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-14 21:17:04,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:04,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:04,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:04,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:17:04,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:04,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:17:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-14 21:17:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:17:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:05,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:17:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:17:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:17:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:17:05,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278052193] [2020-10-14 21:17:05,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:05,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:17:05,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607288829] [2020-10-14 21:17:05,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:05,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:05,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:05,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:05,935 INFO L87 Difference]: Start difference. First operand 31544 states and 42270 transitions. Second operand 7 states. [2020-10-14 21:17:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:24,307 INFO L93 Difference]: Finished difference Result 80237 states and 112421 transitions. [2020-10-14 21:17:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:17:24,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 21:17:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:24,501 INFO L225 Difference]: With dead ends: 80237 [2020-10-14 21:17:24,501 INFO L226 Difference]: Without dead ends: 48699 [2020-10-14 21:17:24,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:17:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48699 states. [2020-10-14 21:17:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48699 to 47540. [2020-10-14 21:17:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47540 states. [2020-10-14 21:17:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47540 states to 47540 states and 61693 transitions. [2020-10-14 21:17:25,694 INFO L78 Accepts]: Start accepts. Automaton has 47540 states and 61693 transitions. Word has length 250 [2020-10-14 21:17:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:25,695 INFO L479 AbstractCegarLoop]: Abstraction has 47540 states and 61693 transitions. [2020-10-14 21:17:25,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 47540 states and 61693 transitions. [2020-10-14 21:17:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 21:17:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:25,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:25,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:17:25,701 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash 424011442, now seen corresponding path program 1 times [2020-10-14 21:17:25,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:25,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275637782] [2020-10-14 21:17:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:27,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 21:17:27,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-10-14 21:17:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:27,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:17:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:17:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:27,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:27,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:27,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:27,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:17:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:17:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:27,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:17:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 21:17:27,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:27,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:17:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 104 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:17:28,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275637782] [2020-10-14 21:17:28,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:28,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:17:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766334288] [2020-10-14 21:17:28,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:17:28,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:17:28,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:17:28,073 INFO L87 Difference]: Start difference. First operand 47540 states and 61693 transitions. Second operand 6 states. [2020-10-14 21:17:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:47,887 INFO L93 Difference]: Finished difference Result 116858 states and 155489 transitions. [2020-10-14 21:17:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:17:47,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 261 [2020-10-14 21:17:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:48,072 INFO L225 Difference]: With dead ends: 116858 [2020-10-14 21:17:48,072 INFO L226 Difference]: Without dead ends: 69324 [2020-10-14 21:17:48,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:17:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69324 states. [2020-10-14 21:17:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69324 to 68422. [2020-10-14 21:17:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68422 states. [2020-10-14 21:17:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68422 states to 68422 states and 89534 transitions. [2020-10-14 21:17:49,285 INFO L78 Accepts]: Start accepts. Automaton has 68422 states and 89534 transitions. Word has length 261 [2020-10-14 21:17:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:49,286 INFO L479 AbstractCegarLoop]: Abstraction has 68422 states and 89534 transitions. [2020-10-14 21:17:49,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:17:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 68422 states and 89534 transitions. [2020-10-14 21:17:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 21:17:49,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:49,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:49,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:17:49,291 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1150750486, now seen corresponding path program 1 times [2020-10-14 21:17:49,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:49,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078680551] [2020-10-14 21:17:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:49,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 21:17:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-10-14 21:17:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:17:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:52,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:52,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:52,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:17:52,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:52,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:17:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:17:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:52,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:17:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:17:52,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078680551] [2020-10-14 21:17:52,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:52,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:17:52,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833946229] [2020-10-14 21:17:52,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:17:52,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:17:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:17:52,601 INFO L87 Difference]: Start difference. First operand 68422 states and 89534 transitions. Second operand 5 states. [2020-10-14 21:18:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:10,326 INFO L93 Difference]: Finished difference Result 136936 states and 179687 transitions. [2020-10-14 21:18:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:18:10,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-14 21:18:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:10,476 INFO L225 Difference]: With dead ends: 136936 [2020-10-14 21:18:10,476 INFO L226 Difference]: Without dead ends: 67576 [2020-10-14 21:18:10,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:18:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67576 states. [2020-10-14 21:18:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67576 to 66677. [2020-10-14 21:18:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66677 states. [2020-10-14 21:18:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66677 states to 66677 states and 83672 transitions. [2020-10-14 21:18:11,892 INFO L78 Accepts]: Start accepts. Automaton has 66677 states and 83672 transitions. Word has length 265 [2020-10-14 21:18:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:11,893 INFO L479 AbstractCegarLoop]: Abstraction has 66677 states and 83672 transitions. [2020-10-14 21:18:11,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:18:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 66677 states and 83672 transitions. [2020-10-14 21:18:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 21:18:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:11,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:18:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:18:11,900 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 323818619, now seen corresponding path program 1 times [2020-10-14 21:18:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:11,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848911303] [2020-10-14 21:18:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 21:18:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-14 21:18:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:12,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:18:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 21:18:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:12,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:18:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:12,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:18:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:18:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:12,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:18:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:18:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:12,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:12,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:18:12,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:18:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:12,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:18:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:18:13,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848911303] [2020-10-14 21:18:13,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:13,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:18:13,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999275291] [2020-10-14 21:18:13,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:18:13,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:13,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:18:13,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:18:13,165 INFO L87 Difference]: Start difference. First operand 66677 states and 83672 transitions. Second operand 5 states. [2020-10-14 21:18:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:30,251 INFO L93 Difference]: Finished difference Result 158228 states and 206095 transitions. [2020-10-14 21:18:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:18:30,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-14 21:18:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:30,459 INFO L225 Difference]: With dead ends: 158228 [2020-10-14 21:18:30,459 INFO L226 Difference]: Without dead ends: 91557 [2020-10-14 21:18:30,538 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 21:18:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91557 states. [2020-10-14 21:18:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91557 to 91488. [2020-10-14 21:18:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91488 states. [2020-10-14 21:18:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91488 states to 91488 states and 113424 transitions. [2020-10-14 21:18:32,232 INFO L78 Accepts]: Start accepts. Automaton has 91488 states and 113424 transitions. Word has length 312 [2020-10-14 21:18:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:32,232 INFO L479 AbstractCegarLoop]: Abstraction has 91488 states and 113424 transitions. [2020-10-14 21:18:32,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:18:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 91488 states and 113424 transitions. [2020-10-14 21:18:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-14 21:18:32,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:32,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:18:32,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:18:32,239 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash 529982475, now seen corresponding path program 1 times [2020-10-14 21:18:32,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:32,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565074739] [2020-10-14 21:18:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:33,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 21:18:33,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-14 21:18:33,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:33,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:18:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:18:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:18:34,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:34,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:18:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:18:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:18:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:34,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 21:18:34,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:34,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:18:34,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565074739] [2020-10-14 21:18:34,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:34,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:18:34,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553444087] [2020-10-14 21:18:34,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:34,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:34,749 INFO L87 Difference]: Start difference. First operand 91488 states and 113424 transitions. Second operand 7 states.