/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:05:47,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:05:47,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:05:47,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:05:47,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:05:47,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:05:47,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:05:47,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:05:47,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:05:47,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:05:47,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:05:47,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:05:47,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:05:47,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:05:47,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:05:47,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:05:47,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:05:47,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:05:47,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:05:47,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:05:47,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:05:47,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:05:47,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:05:47,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:05:47,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:05:47,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:05:47,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:05:47,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:05:47,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:05:47,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:05:47,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:05:47,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:05:47,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:05:47,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:05:47,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:05:47,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:05:47,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:05:47,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:05:47,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:05:47,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:05:47,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:05:47,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 07:05:47,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:05:47,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:05:47,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:05:47,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:05:47,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:05:47,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:05:47,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:05:47,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:05:47,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:05:47,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:05:47,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:05:47,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:05:47,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:05:47,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:05:47,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:05:47,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:05:47,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:05:47,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:05:47,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:05:47,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:05:47,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:05:47,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:05:47,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:05:47,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:05:47,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:05:48,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:05:48,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:05:48,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:05:48,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:05:48,096 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:05:48,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label20.c [2020-10-13 07:05:48,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bafdeba6/1e5368234ac84246846eafc019779d48/FLAG4e051b1c7 [2020-10-13 07:05:49,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:05:49,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label20.c [2020-10-13 07:05:49,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bafdeba6/1e5368234ac84246846eafc019779d48/FLAG4e051b1c7 [2020-10-13 07:05:49,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bafdeba6/1e5368234ac84246846eafc019779d48 [2020-10-13 07:05:49,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:05:49,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:05:49,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:05:49,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:05:49,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:05:49,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:49" (1/1) ... [2020-10-13 07:05:49,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e06715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:49, skipping insertion in model container [2020-10-13 07:05:49,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:49" (1/1) ... [2020-10-13 07:05:49,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:05:49,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:05:52,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:05:52,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:05:53,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:05:53,582 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:05:53,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53 WrapperNode [2020-10-13 07:05:53,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:05:53,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:05:53,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:05:53,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:05:53,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... [2020-10-13 07:05:53,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:05:53,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:05:53,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:05:53,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:05:53,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:05:54,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:05:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:05:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:05:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:05:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:05:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:05:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:05:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:05:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:05:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:05:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:05:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:05:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:05:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:01,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:01,252 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:01,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:01 BoogieIcfgContainer [2020-10-13 07:06:01,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:01,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:01,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:01,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:01,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:05:49" (1/3) ... [2020-10-13 07:06:01,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22267e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:01, skipping insertion in model container [2020-10-13 07:06:01,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:53" (2/3) ... [2020-10-13 07:06:01,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22267e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:01, skipping insertion in model container [2020-10-13 07:06:01,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:01" (3/3) ... [2020-10-13 07:06:01,280 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label20.c [2020-10-13 07:06:01,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:01,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:01,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:01,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:01,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:01,356 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:01,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:01,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:01,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:01,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:01,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-13 07:06:01,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:01,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:01,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:01,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1849011375, now seen corresponding path program 1 times [2020-10-13 07:06:01,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:01,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114505011] [2020-10-13 07:06:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-13 07:06:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 07:06:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:06:12,550 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-13 07:06:12,782 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-13 07:06:13,003 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-13 07:06:13,235 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 07:06:13,467 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-13 07:06:13,656 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-13 07:06:14,054 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 78 [2020-10-13 07:06:14,425 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 78 [2020-10-13 07:06:14,702 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 60 [2020-10-13 07:06:14,923 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-10-13 07:06:15,544 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 07:06:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:06:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:06:26,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114505011] [2020-10-13 07:06:26,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:06:26,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:06:26,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607625542] [2020-10-13 07:06:26,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:06:26,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:06:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:06:26,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:06:26,293 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:06:26,670 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:06:27,320 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 159 [2020-10-13 07:06:27,887 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 159 [2020-10-13 07:06:28,495 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:06:32,202 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 163 [2020-10-13 07:06:35,124 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 163 [2020-10-13 07:06:37,546 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 164 [2020-10-13 07:06:38,254 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 168 [2020-10-13 07:06:39,335 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 167 [2020-10-13 07:06:48,808 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-13 07:06:49,457 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2020-10-13 07:06:52,447 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 171 [2020-10-13 07:06:59,939 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:07:00,574 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:07:02,998 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:07:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:07:16,060 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:07:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:07:16,062 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 958 [2020-10-13 07:07:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:07:16,102 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:07:16,103 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:07:16,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:07:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:07:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:07:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:07:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:07:16,277 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 958 [2020-10-13 07:07:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:07:16,279 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:07:16,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:07:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:07:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-13 07:07:16,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:07:16,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:07:16,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:07:16,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:07:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:07:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1254399678, now seen corresponding path program 1 times [2020-10-13 07:07:16,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:07:16,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983824439] [2020-10-13 07:07:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:07:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:21,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-13 07:07:21,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:07:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-13 07:07:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:07:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:07:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:07:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:22,455 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 07:07:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:07:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:07:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:22,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:22,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:07:22,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:22,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 07:07:22,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:07:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:07:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:07:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:07:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:24,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983824439] [2020-10-13 07:07:24,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:24,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:07:24,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894958701] [2020-10-13 07:07:24,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:07:24,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:07:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:07:24,688 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:07:24,851 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:07:25,963 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:07:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:07:45,317 INFO L93 Difference]: Finished difference Result 4501 states and 7543 transitions. [2020-10-13 07:07:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:07:45,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-13 07:07:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:07:45,336 INFO L225 Difference]: With dead ends: 4501 [2020-10-13 07:07:45,337 INFO L226 Difference]: Without dead ends: 3242 [2020-10-13 07:07:45,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:07:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-10-13 07:07:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3163. [2020-10-13 07:07:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-13 07:07:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4674 transitions. [2020-10-13 07:07:45,436 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4674 transitions. Word has length 1028 [2020-10-13 07:07:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:07:45,437 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4674 transitions. [2020-10-13 07:07:45,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:07:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4674 transitions. [2020-10-13 07:07:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2020-10-13 07:07:45,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:07:45,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:07:45,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:07:45,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:07:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:07:45,464 INFO L82 PathProgramCache]: Analyzing trace with hash 731413061, now seen corresponding path program 1 times [2020-10-13 07:07:45,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:07:45,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787692713] [2020-10-13 07:07:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:07:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-13 07:07:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 965 [2020-10-13 07:07:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:51,996 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:52,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:52,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:52,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 07:07:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:07:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:07:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:07:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:07:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:52,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:07:52,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 07:07:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:07:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 118 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:53,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787692713] [2020-10-13 07:07:53,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:07:53,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 07:07:53,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168053009] [2020-10-13 07:07:53,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 07:07:53,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 07:07:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:07:53,519 INFO L87 Difference]: Start difference. First operand 3163 states and 4674 transitions. Second operand 6 states. [2020-10-13 07:07:53,672 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:08:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:13,339 INFO L93 Difference]: Finished difference Result 9862 states and 15811 transitions. [2020-10-13 07:08:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 07:08:13,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1080 [2020-10-13 07:08:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:13,384 INFO L225 Difference]: With dead ends: 9862 [2020-10-13 07:08:13,385 INFO L226 Difference]: Without dead ends: 7459 [2020-10-13 07:08:13,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 07:08:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2020-10-13 07:08:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 7397. [2020-10-13 07:08:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7397 states. [2020-10-13 07:08:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7397 states to 7397 states and 10927 transitions. [2020-10-13 07:08:13,715 INFO L78 Accepts]: Start accepts. Automaton has 7397 states and 10927 transitions. Word has length 1080 [2020-10-13 07:08:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:13,717 INFO L479 AbstractCegarLoop]: Abstraction has 7397 states and 10927 transitions. [2020-10-13 07:08:13,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 07:08:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7397 states and 10927 transitions. [2020-10-13 07:08:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-13 07:08:13,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:13,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:13,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:08:13,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1558006125, now seen corresponding path program 1 times [2020-10-13 07:08:13,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:13,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002315174] [2020-10-13 07:08:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:19,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:19,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-13 07:08:19,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:08:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-13 07:08:19,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:08:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 07:08:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:19,405 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:19,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:19,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:19,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 07:08:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:08:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:08:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:19,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:19,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:19,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:08:19,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 07:08:19,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:08:19,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:19,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:08:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:08:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 07:08:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:19,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 07:08:19,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:08:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:08:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 07:08:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:08:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 146 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 07:08:20,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002315174] [2020-10-13 07:08:20,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:08:20,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:08:20,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600389676] [2020-10-13 07:08:20,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:08:20,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:20,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:08:20,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:08:20,400 INFO L87 Difference]: Start difference. First operand 7397 states and 10927 transitions. Second operand 7 states. [2020-10-13 07:08:20,553 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:08:21,911 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 07:08:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:39,379 INFO L93 Difference]: Finished difference Result 20787 states and 32146 transitions. [2020-10-13 07:08:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:08:39,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1100 [2020-10-13 07:08:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:39,454 INFO L225 Difference]: With dead ends: 20787 [2020-10-13 07:08:39,454 INFO L226 Difference]: Without dead ends: 14150 [2020-10-13 07:08:39,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:08:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2020-10-13 07:08:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 13953. [2020-10-13 07:08:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13953 states. [2020-10-13 07:08:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13953 states to 13953 states and 19914 transitions. [2020-10-13 07:08:39,889 INFO L78 Accepts]: Start accepts. Automaton has 13953 states and 19914 transitions. Word has length 1100 [2020-10-13 07:08:39,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:39,890 INFO L479 AbstractCegarLoop]: Abstraction has 13953 states and 19914 transitions. [2020-10-13 07:08:39,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:08:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13953 states and 19914 transitions. [2020-10-13 07:08:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-13 07:08:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:39,945 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:39,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:08:39,946 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:39,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1422937297, now seen corresponding path program 1 times [2020-10-13 07:08:39,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:39,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341591245] [2020-10-13 07:08:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1120 [2020-10-13 07:08:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:08:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5374 [2020-10-13 07:08:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:08:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 07:08:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:45,928 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:45,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:45,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 07:08:45,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:08:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:08:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:08:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:08:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 07:08:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:08:46,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341591245] [2020-10-13 07:08:46,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:08:46,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 07:08:46,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767604003] [2020-10-13 07:08:46,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 07:08:46,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 07:08:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 07:08:46,988 INFO L87 Difference]: Start difference. First operand 13953 states and 19914 transitions. Second operand 8 states. [2020-10-13 07:08:47,148 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:08:48,093 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:08:48,968 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 07:09:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:09:12,414 INFO L93 Difference]: Finished difference Result 53509 states and 84111 transitions. [2020-10-13 07:09:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 07:09:12,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1100 [2020-10-13 07:09:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:09:12,612 INFO L225 Difference]: With dead ends: 53509 [2020-10-13 07:09:12,612 INFO L226 Difference]: Without dead ends: 40316 [2020-10-13 07:09:12,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 07:09:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40316 states. [2020-10-13 07:09:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40316 to 39965. [2020-10-13 07:09:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39965 states. [2020-10-13 07:09:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39965 states to 39965 states and 59588 transitions. [2020-10-13 07:09:13,825 INFO L78 Accepts]: Start accepts. Automaton has 39965 states and 59588 transitions. Word has length 1100 [2020-10-13 07:09:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:09:13,826 INFO L479 AbstractCegarLoop]: Abstraction has 39965 states and 59588 transitions. [2020-10-13 07:09:13,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 07:09:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 39965 states and 59588 transitions. [2020-10-13 07:09:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2020-10-13 07:09:13,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:13,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:09:13,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 07:09:13,975 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1238448526, now seen corresponding path program 1 times [2020-10-13 07:09:13,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:13,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729011114] [2020-10-13 07:09:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5434 [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:09:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:09:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 07:09:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:19,922 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:19,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:19,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:09:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:09:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:09:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:09:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:20,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:20,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:09:20,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:20,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:09:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:20,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:20,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 07:09:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 07:09:20,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:09:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 07:09:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:09:20,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729011114] [2020-10-13 07:09:20,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:09:20,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:09:20,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552779581] [2020-10-13 07:09:20,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:09:20,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:09:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:09:21,000 INFO L87 Difference]: Start difference. First operand 39965 states and 59588 transitions. Second operand 7 states. [2020-10-13 07:09:21,147 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:09:22,701 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130