/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:17:45,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:17:45,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:17:45,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:17:45,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:17:45,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:17:45,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:17:45,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:17:45,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:17:45,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:17:45,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:17:45,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:17:45,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:17:45,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:17:45,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:17:45,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:17:45,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:17:45,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:17:45,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:17:45,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:17:45,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:17:45,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:17:45,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:17:45,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:17:45,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:17:45,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:17:45,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:17:45,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:17:45,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:17:45,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:17:45,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:17:45,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:17:45,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:17:45,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:17:45,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:17:45,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:17:45,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:17:45,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:17:45,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:17:45,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:17:45,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:17:45,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:17:45,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:17:45,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:17:45,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:17:45,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:17:45,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:17:45,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:17:45,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:17:45,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:17:45,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:17:45,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:17:45,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:17:45,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:17:45,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:17:45,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:17:45,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:17:45,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:17:45,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:17:45,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:17:45,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:17:45,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:17:45,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:17:45,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:17:45,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:17:45,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:17:45,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:17:45,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:17:45,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:17:45,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:17:45,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:17:45,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:17:45,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:17:45,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:17:45,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:17:45,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:17:45,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:17:45,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-14 01:17:45,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2b9a951f/f44170d142a6484f80b78c9108b3cd78/FLAGfb910024e [2020-10-14 01:17:46,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:17:46,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-14 01:17:46,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2b9a951f/f44170d142a6484f80b78c9108b3cd78/FLAGfb910024e [2020-10-14 01:17:46,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2b9a951f/f44170d142a6484f80b78c9108b3cd78 [2020-10-14 01:17:46,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:17:47,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:17:47,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:17:47,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:17:47,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:17:47,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:46" (1/1) ... [2020-10-14 01:17:47,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f30a912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:47, skipping insertion in model container [2020-10-14 01:17:47,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:46" (1/1) ... [2020-10-14 01:17:47,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:17:47,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:17:49,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:17:49,809 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:17:51,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:17:51,255 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:17:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51 WrapperNode [2020-10-14 01:17:51,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:17:51,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:17:51,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:17:51,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:17:51,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... [2020-10-14 01:17:51,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:17:51,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:17:51,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:17:51,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:17:51,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:17:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:17:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:17:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:17:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:17:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:17:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:17:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:17:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:17:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:17:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:17:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:17:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:17:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:17:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:17:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:17:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:17:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:17:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:17:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:17:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:17:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:18:00,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:18:00,055 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:18:00,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:18:00 BoogieIcfgContainer [2020-10-14 01:18:00,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:18:00,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:18:00,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:18:00,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:18:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:17:46" (1/3) ... [2020-10-14 01:18:00,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea5b5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:18:00, skipping insertion in model container [2020-10-14 01:18:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:51" (2/3) ... [2020-10-14 01:18:00,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea5b5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:18:00, skipping insertion in model container [2020-10-14 01:18:00,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:18:00" (3/3) ... [2020-10-14 01:18:00,087 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label21.c [2020-10-14 01:18:00,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:18:00,107 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:18:00,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:18:00,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:18:00,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:18:00,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:18:00,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:18:00,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:18:00,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:18:00,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:18:00,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:18:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:18:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-14 01:18:00,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:18:00,307 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:18:00,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:18:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:18:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash 416949744, now seen corresponding path program 1 times [2020-10-14 01:18:00,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:18:00,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929753038] [2020-10-14 01:18:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:18:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:01,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:06,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-14 01:18:06,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5237 [2020-10-14 01:18:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:18:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:18:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1703 [2020-10-14 01:18:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:18:07,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:18:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:07,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:07,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:18:07,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:18:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:07,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:18:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:18:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:18:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:18:10,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929753038] [2020-10-14 01:18:10,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:18:10,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:18:10,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619501804] [2020-10-14 01:18:10,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:18:10,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:18:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:18:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:18:10,281 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-14 01:18:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:18:34,447 INFO L93 Difference]: Finished difference Result 8124 states and 15411 transitions. [2020-10-14 01:18:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:18:34,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1687 [2020-10-14 01:18:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:18:34,509 INFO L225 Difference]: With dead ends: 8124 [2020-10-14 01:18:34,509 INFO L226 Difference]: Without dead ends: 5834 [2020-10-14 01:18:34,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:18:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2020-10-14 01:18:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801. [2020-10-14 01:18:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-14 01:18:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions. [2020-10-14 01:18:34,791 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1687 [2020-10-14 01:18:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:18:34,795 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions. [2020-10-14 01:18:34,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:18:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions. [2020-10-14 01:18:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-14 01:18:34,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:18:34,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:18:34,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:18:34,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:18:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:18:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1792438683, now seen corresponding path program 1 times [2020-10-14 01:18:34,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:18:34,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887214549] [2020-10-14 01:18:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:18:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:37,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-14 01:18:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:18:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 01:18:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:40,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:18:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:18:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:18:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:18:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:41,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:18:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:18:41,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:41,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:18:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:18:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:18:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:18:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:41,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:18:41,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:18:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:41,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:18:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:18:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:18:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:18:42,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887214549] [2020-10-14 01:18:42,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:18:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:18:42,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318642576] [2020-10-14 01:18:42,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:18:42,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:18:42,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:18:42,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:18:42,433 INFO L87 Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 7 states. [2020-10-14 01:19:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:19:02,772 INFO L93 Difference]: Finished difference Result 17241 states and 28254 transitions. [2020-10-14 01:19:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:19:02,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1696 [2020-10-14 01:19:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:19:02,831 INFO L225 Difference]: With dead ends: 17241 [2020-10-14 01:19:02,831 INFO L226 Difference]: Without dead ends: 11446 [2020-10-14 01:19:02,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:19:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2020-10-14 01:19:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 11271. [2020-10-14 01:19:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11271 states. [2020-10-14 01:19:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11271 states to 11271 states and 16472 transitions. [2020-10-14 01:19:03,186 INFO L78 Accepts]: Start accepts. Automaton has 11271 states and 16472 transitions. Word has length 1696 [2020-10-14 01:19:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:19:03,187 INFO L479 AbstractCegarLoop]: Abstraction has 11271 states and 16472 transitions. [2020-10-14 01:19:03,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:19:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11271 states and 16472 transitions. [2020-10-14 01:19:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2020-10-14 01:19:03,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:19:03,255 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:19:03,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:19:03,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:19:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:19:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 493772351, now seen corresponding path program 1 times [2020-10-14 01:19:03,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:19:03,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731474666] [2020-10-14 01:19:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:19:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:08,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1722 [2020-10-14 01:19:08,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:19:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-14 01:19:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:08,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:19:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:19:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:19:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:19:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:09,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:09,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:19:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:19:09,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:09,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:19:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:19:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:19:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:19:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:19:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:19:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:19:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:19:10,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731474666] [2020-10-14 01:19:10,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:19:10,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:19:10,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303532451] [2020-10-14 01:19:10,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:19:10,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:19:10,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:19:10,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:19:10,688 INFO L87 Difference]: Start difference. First operand 11271 states and 16472 transitions. Second operand 8 states. [2020-10-14 01:19:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:19:46,047 INFO L93 Difference]: Finished difference Result 33818 states and 49071 transitions. [2020-10-14 01:19:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 01:19:46,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1698 [2020-10-14 01:19:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:19:46,128 INFO L225 Difference]: With dead ends: 33818 [2020-10-14 01:19:46,128 INFO L226 Difference]: Without dead ends: 22553 [2020-10-14 01:19:46,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:19:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22553 states. [2020-10-14 01:19:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22553 to 22373. [2020-10-14 01:19:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22373 states. [2020-10-14 01:19:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22373 states to 22373 states and 31574 transitions. [2020-10-14 01:19:46,768 INFO L78 Accepts]: Start accepts. Automaton has 22373 states and 31574 transitions. Word has length 1698 [2020-10-14 01:19:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:19:46,769 INFO L479 AbstractCegarLoop]: Abstraction has 22373 states and 31574 transitions. [2020-10-14 01:19:46,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:19:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22373 states and 31574 transitions. [2020-10-14 01:19:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-14 01:19:46,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:19:46,889 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:19:46,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:19:46,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:19:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:19:46,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1057929682, now seen corresponding path program 1 times [2020-10-14 01:19:46,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:19:46,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928420958] [2020-10-14 01:19:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:19:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:19:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:19:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:19:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:19:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:52,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:52,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:19:52,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:19:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:19:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:19:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:19:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:19:52,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:19:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:19:53,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928420958] [2020-10-14 01:19:53,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:19:53,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:19:53,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232726265] [2020-10-14 01:19:53,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:19:53,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:19:53,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:19:53,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:19:53,740 INFO L87 Difference]: Start difference. First operand 22373 states and 31574 transitions. Second operand 7 states. [2020-10-14 01:20:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:20:19,231 INFO L93 Difference]: Finished difference Result 64424 states and 97443 transitions. [2020-10-14 01:20:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:20:19,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1704 [2020-10-14 01:20:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:20:19,423 INFO L225 Difference]: With dead ends: 64424 [2020-10-14 01:20:19,424 INFO L226 Difference]: Without dead ends: 42057 [2020-10-14 01:20:19,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:20:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42057 states. [2020-10-14 01:20:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42057 to 41733. [2020-10-14 01:20:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41733 states. [2020-10-14 01:20:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41733 states to 41733 states and 58259 transitions. [2020-10-14 01:20:22,046 INFO L78 Accepts]: Start accepts. Automaton has 41733 states and 58259 transitions. Word has length 1704 [2020-10-14 01:20:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:20:22,047 INFO L479 AbstractCegarLoop]: Abstraction has 41733 states and 58259 transitions. [2020-10-14 01:20:22,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:20:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 41733 states and 58259 transitions. [2020-10-14 01:20:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-14 01:20:22,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:20:22,184 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:20:22,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:20:22,185 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:20:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:20:22,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1294131217, now seen corresponding path program 1 times [2020-10-14 01:20:22,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:20:22,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996405133] [2020-10-14 01:20:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:20:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-14 01:20:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:20:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-14 01:20:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:27,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:20:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:20:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 01:20:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:20:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:20:28,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:20:28,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:28,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:20:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:20:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:20:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:20:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:20:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:20:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:20:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:20:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:20:29,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996405133] [2020-10-14 01:20:29,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:20:29,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:20:29,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023962907] [2020-10-14 01:20:29,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:20:29,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:20:29,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:20:29,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:20:29,446 INFO L87 Difference]: Start difference. First operand 41733 states and 58259 transitions. Second operand 7 states. [2020-10-14 01:20:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:20:50,870 INFO L93 Difference]: Finished difference Result 98897 states and 139960 transitions. [2020-10-14 01:20:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:20:50,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1709 [2020-10-14 01:20:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:20:51,107 INFO L225 Difference]: With dead ends: 98897 [2020-10-14 01:20:51,107 INFO L226 Difference]: Without dead ends: 57170 [2020-10-14 01:20:51,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:20:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57170 states. [2020-10-14 01:20:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57170 to 55013. [2020-10-14 01:20:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55013 states. [2020-10-14 01:20:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55013 states to 55013 states and 75499 transitions. [2020-10-14 01:20:52,430 INFO L78 Accepts]: Start accepts. Automaton has 55013 states and 75499 transitions. Word has length 1709 [2020-10-14 01:20:52,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:20:52,431 INFO L479 AbstractCegarLoop]: Abstraction has 55013 states and 75499 transitions. [2020-10-14 01:20:52,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:20:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 55013 states and 75499 transitions. [2020-10-14 01:20:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2020-10-14 01:20:52,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:20:52,588 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:20:52,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:20:52,589 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:20:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:20:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash 305644932, now seen corresponding path program 1 times [2020-10-14 01:20:52,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:20:52,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339896379] [2020-10-14 01:20:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:20:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1841 [2020-10-14 01:20:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:20:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 01:20:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:58,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:20:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 01:20:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:20:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:20:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:58,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:20:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:20:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:20:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:20:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:20:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 01:20:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:20:58,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 01:20:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:58,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:20:58,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:20:58,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:58,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:20:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:20:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:20:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:21:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:21:00,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339896379] [2020-10-14 01:21:00,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:21:00,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:21:00,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948238198] [2020-10-14 01:21:00,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:21:00,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:21:00,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:21:00,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:21:00,161 INFO L87 Difference]: Start difference. First operand 55013 states and 75499 transitions. Second operand 7 states. [2020-10-14 01:21:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:21:24,904 INFO L93 Difference]: Finished difference Result 133742 states and 188165 transitions. [2020-10-14 01:21:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:21:24,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1815 [2020-10-14 01:21:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:21:25,156 INFO L225 Difference]: With dead ends: 133742 [2020-10-14 01:21:25,157 INFO L226 Difference]: Without dead ends: 78735 [2020-10-14 01:21:25,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:21:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78735 states. [2020-10-14 01:21:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78735 to 73269. [2020-10-14 01:21:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73269 states.