/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/Problem06_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:31:07,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:31:07,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:31:07,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:31:07,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:31:07,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:31:07,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:31:07,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:31:07,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:31:07,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:31:07,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:31:07,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:31:07,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:31:07,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:31:07,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:31:07,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:31:07,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:31:07,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:31:07,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:31:07,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:31:07,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:31:07,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:31:07,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:31:07,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:31:07,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:31:07,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:31:07,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:31:07,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:31:07,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:31:07,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:31:07,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:31:07,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:31:07,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:31:07,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:31:07,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:31:07,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:31:07,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:31:07,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:31:07,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:31:07,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:31:07,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:31:07,889 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 01:31:07,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:31:07,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:31:07,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:31:07,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:31:07,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:31:07,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:31:07,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:31:07,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:31:07,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:31:07,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:31:07,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:31:07,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:31:07,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:31:07,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:31:07,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:31:07,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:31:07,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:31:07,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:31:07,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:31:07,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:31:07,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:31:07,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:31:07,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:31:07,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:31:07,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:31:07,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:31:07,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:31:07,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:31:07,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:31:07,917 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 01:31:08,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:31:08,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:31:08,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:31:08,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:31:08,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:31:08,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2020-10-14 01:31:08,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f690e46/b30749a545f94ae381c046423b1ceb31/FLAGd818231f1 [2020-10-14 01:31:09,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:31:09,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2020-10-14 01:31:09,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f690e46/b30749a545f94ae381c046423b1ceb31/FLAGd818231f1 [2020-10-14 01:31:09,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f690e46/b30749a545f94ae381c046423b1ceb31 [2020-10-14 01:31:09,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:31:09,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:31:09,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:31:09,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:31:09,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:31:09,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:31:09" (1/1) ... [2020-10-14 01:31:09,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:09, skipping insertion in model container [2020-10-14 01:31:09,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:31:09" (1/1) ... [2020-10-14 01:31:09,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:31:09,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:31:12,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:31:12,204 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:31:13,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:31:13,521 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:31:13,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13 WrapperNode [2020-10-14 01:31:13,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:31:13,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:31:13,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:31:13,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:31:13,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (1/1) ... [2020-10-14 01:31:13,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:31:13,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:31:13,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:31:13,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:31:13,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (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 01:31:14,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:31:14,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:31:14,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:31:14,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:31:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:31:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:31:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:31:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:31:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:31:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:31:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:31:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:31:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:31:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:31:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:31:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:31:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:31:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:31:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:31:21,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:31:21,220 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:31:21,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:31:21 BoogieIcfgContainer [2020-10-14 01:31:21,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:31:21,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:31:21,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:31:21,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:31:21,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:31:09" (1/3) ... [2020-10-14 01:31:21,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44faf91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:31:21, skipping insertion in model container [2020-10-14 01:31:21,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:31:13" (2/3) ... [2020-10-14 01:31:21,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44faf91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:31:21, skipping insertion in model container [2020-10-14 01:31:21,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:31:21" (3/3) ... [2020-10-14 01:31:21,247 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label10.c [2020-10-14 01:31:21,257 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:31:21,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:31:21,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:31:21,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:31:21,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:31:21,310 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:31:21,310 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:31:21,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:31:21,310 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:31:21,310 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:31:21,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:31:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:31:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-14 01:31:21,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:21,437 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] [2020-10-14 01:31:21,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash 752382048, now seen corresponding path program 1 times [2020-10-14 01:31:21,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:21,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138081095] [2020-10-14 01:31:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-14 01:31:27,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5285 [2020-10-14 01:31:27,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:31:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 967 [2020-10-14 01:31:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:31:29,335 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:29,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:29,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:31:29,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:29,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:29,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:30,391 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 01:31:30,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138081095] [2020-10-14 01:31:30,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:31:30,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:31:30,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127919230] [2020-10-14 01:31:30,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:31:30,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:30,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:31:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:31:30,421 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:31:30,631 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:43,678 INFO L93 Difference]: Finished difference Result 3767 states and 7011 transitions. [2020-10-14 01:31:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:31:43,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 957 [2020-10-14 01:31:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:43,724 INFO L225 Difference]: With dead ends: 3767 [2020-10-14 01:31:43,725 INFO L226 Difference]: Without dead ends: 2388 [2020-10-14 01:31:43,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:31:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-14 01:31:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2365. [2020-10-14 01:31:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-10-14 01:31:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 4168 transitions. [2020-10-14 01:31:43,917 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 4168 transitions. Word has length 957 [2020-10-14 01:31:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:43,920 INFO L479 AbstractCegarLoop]: Abstraction has 2365 states and 4168 transitions. [2020-10-14 01:31:43,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:31:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 4168 transitions. [2020-10-14 01:31:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-14 01:31:43,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:43,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:31:43,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:31:43,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:43,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1771166955, now seen corresponding path program 1 times [2020-10-14 01:31:43,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:43,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437503631] [2020-10-14 01:31:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:49,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-14 01:31:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-14 01:31:49,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:49,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:31:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:31:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:49,998 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:50,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:50,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:31:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:50,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 01:31:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:31:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:31:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:50,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:31:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:31:50,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437503631] [2020-10-14 01:31:50,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:31:50,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:31:50,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879650342] [2020-10-14 01:31:50,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:31:50,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:50,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:31:50,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:31:50,649 INFO L87 Difference]: Start difference. First operand 2365 states and 4168 transitions. Second operand 8 states. [2020-10-14 01:31:50,790 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:51,254 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:32:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:32:13,568 INFO L93 Difference]: Finished difference Result 9461 states and 16834 transitions. [2020-10-14 01:32:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:32:13,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 965 [2020-10-14 01:32:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:32:13,611 INFO L225 Difference]: With dead ends: 9461 [2020-10-14 01:32:13,611 INFO L226 Difference]: Without dead ends: 7102 [2020-10-14 01:32:13,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:32:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2020-10-14 01:32:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 7065. [2020-10-14 01:32:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7065 states. [2020-10-14 01:32:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 12525 transitions. [2020-10-14 01:32:13,841 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 12525 transitions. Word has length 965 [2020-10-14 01:32:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:32:13,842 INFO L479 AbstractCegarLoop]: Abstraction has 7065 states and 12525 transitions. [2020-10-14 01:32:13,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:32:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 12525 transitions. [2020-10-14 01:32:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-14 01:32:13,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:32:13,896 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:32:13,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:32:13,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:32:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:32:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2102184871, now seen corresponding path program 1 times [2020-10-14 01:32:13,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:32:13,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697404401] [2020-10-14 01:32:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:32:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:19,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:19,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-14 01:32:19,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:32:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 01:32:19,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:19,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:32:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:32:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:32:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:32:19,489 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:32:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:32:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:19,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:32:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:32:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:19,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:32:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:32:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:32:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:32:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:19,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:32:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 01:32:19,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:19,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:32:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:32:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:32:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:32:20,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697404401] [2020-10-14 01:32:20,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:32:20,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:32:20,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940099216] [2020-10-14 01:32:20,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:32:20,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:32:20,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:32:20,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:32:20,126 INFO L87 Difference]: Start difference. First operand 7065 states and 12525 transitions. Second operand 7 states. [2020-10-14 01:32:20,272 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:32:21,161 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:32:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:32:35,699 INFO L93 Difference]: Finished difference Result 21320 states and 39745 transitions. [2020-10-14 01:32:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:32:35,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 967 [2020-10-14 01:32:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:32:35,801 INFO L225 Difference]: With dead ends: 21320 [2020-10-14 01:32:35,802 INFO L226 Difference]: Without dead ends: 14261 [2020-10-14 01:32:35,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:32:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2020-10-14 01:32:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 13677. [2020-10-14 01:32:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13677 states. [2020-10-14 01:32:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13677 states to 13677 states and 22146 transitions. [2020-10-14 01:32:36,405 INFO L78 Accepts]: Start accepts. Automaton has 13677 states and 22146 transitions. Word has length 967 [2020-10-14 01:32:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:32:36,405 INFO L479 AbstractCegarLoop]: Abstraction has 13677 states and 22146 transitions. [2020-10-14 01:32:36,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:32:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 13677 states and 22146 transitions. [2020-10-14 01:32:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-14 01:32:36,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:32:36,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 01:32:36,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:32:36,457 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:32:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:32:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 515592296, now seen corresponding path program 1 times [2020-10-14 01:32:36,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:32:36,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050412903] [2020-10-14 01:32:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:32:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:41,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:41,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-14 01:32:41,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:32:41,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-14 01:32:41,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:41,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:32:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 01:32:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:32:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:41,971 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:32:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:32:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:41,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:32:41,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:41,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:32:41,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:41,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:32:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:32:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:32:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:42,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:32:42,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:32:42,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:42,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:32:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:32:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 01:32:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:42,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:32:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:32:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:42,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:32:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:32:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:32:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:32:42,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050412903] [2020-10-14 01:32:42,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:32:42,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:32:42,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257494169] [2020-10-14 01:32:42,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:32:42,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:32:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:32:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:32:42,644 INFO L87 Difference]: Start difference. First operand 13677 states and 22146 transitions. Second operand 7 states. [2020-10-14 01:32:42,915 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:32:43,406 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:33:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:33:02,533 INFO L93 Difference]: Finished difference Result 41840 states and 73464 transitions. [2020-10-14 01:33:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:33:02,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-14 01:33:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:33:02,665 INFO L225 Difference]: With dead ends: 41840 [2020-10-14 01:33:02,665 INFO L226 Difference]: Without dead ends: 28169 [2020-10-14 01:33:02,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:33:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28169 states. [2020-10-14 01:33:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28169 to 27565. [2020-10-14 01:33:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27565 states. [2020-10-14 01:33:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27565 states to 27565 states and 43627 transitions. [2020-10-14 01:33:03,565 INFO L78 Accepts]: Start accepts. Automaton has 27565 states and 43627 transitions. Word has length 980 [2020-10-14 01:33:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:33:03,566 INFO L479 AbstractCegarLoop]: Abstraction has 27565 states and 43627 transitions. [2020-10-14 01:33:03,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:33:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 27565 states and 43627 transitions. [2020-10-14 01:33:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-14 01:33:03,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:33:03,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:03,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:33:03,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:33:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:33:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 745167084, now seen corresponding path program 1 times [2020-10-14 01:33:03,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:33:03,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672112664] [2020-10-14 01:33:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:33:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:03,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-14 01:33:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:33:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5389 [2020-10-14 01:33:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:33:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 01:33:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:33:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:09,502 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:33:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:33:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:09,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:09,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:33:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:33:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:33:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:33:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:09,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:33:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:33:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 01:33:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:33:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 01:33:09,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:09,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:33:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:33:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:33:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:33:10,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672112664] [2020-10-14 01:33:10,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:33:10,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:33:10,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128050359] [2020-10-14 01:33:10,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:33:10,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:33:10,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:33:10,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:33:10,372 INFO L87 Difference]: Start difference. First operand 27565 states and 43627 transitions. Second operand 8 states. [2020-10-14 01:33:10,645 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:33:11,145 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:33:15,635 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:33:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:33:47,648 INFO L93 Difference]: Finished difference Result 138694 states and 243945 transitions. [2020-10-14 01:33:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:33:47,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 982 [2020-10-14 01:33:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:33:48,174 INFO L225 Difference]: With dead ends: 138694 [2020-10-14 01:33:48,175 INFO L226 Difference]: Without dead ends: 111135 [2020-10-14 01:33:50,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:33:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111135 states. [2020-10-14 01:33:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111135 to 110943. [2020-10-14 01:33:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110943 states. [2020-10-14 01:33:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110943 states to 110943 states and 186500 transitions. [2020-10-14 01:33:52,757 INFO L78 Accepts]: Start accepts. Automaton has 110943 states and 186500 transitions. Word has length 982 [2020-10-14 01:33:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:33:52,757 INFO L479 AbstractCegarLoop]: Abstraction has 110943 states and 186500 transitions. [2020-10-14 01:33:52,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:33:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 110943 states and 186500 transitions. [2020-10-14 01:33:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-14 01:33:53,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:33:53,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-14 01:33:53,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:33:53,157 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:33:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:33:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2127304176, now seen corresponding path program 1 times [2020-10-14 01:33:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:33:53,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371032843] [2020-10-14 01:33:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:33:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:58,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:58,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-14 01:33:58,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:33:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-14 01:33:58,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:58,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:33:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:33:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:33:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:58,681 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:33:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:33:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:33:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:33:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:33:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:33:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:58,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:33:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:33:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:33:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:33:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:58,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:58,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:33:58,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:33:58,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:33:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:33:59,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371032843] [2020-10-14 01:33:59,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:33:59,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:33:59,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505904866] [2020-10-14 01:33:59,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:33:59,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:33:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:33:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:33:59,579 INFO L87 Difference]: Start difference. First operand 110943 states and 186500 transitions. Second operand 7 states. [2020-10-14 01:33:59,724 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:34:00,394 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:34:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:34:18,013 INFO L93 Difference]: Finished difference Result 338247 states and 627049 transitions. [2020-10-14 01:34:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:34:18,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 984 [2020-10-14 01:34:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:34:19,209 INFO L225 Difference]: With dead ends: 338247 [2020-10-14 01:34:19,210 INFO L226 Difference]: Without dead ends: 227310 [2020-10-14 01:34:19,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:34:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227310 states. [2020-10-14 01:34:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227310 to 224402. [2020-10-14 01:34:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224402 states. [2020-10-14 01:34:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224402 states to 224402 states and 384502 transitions. [2020-10-14 01:34:29,776 INFO L78 Accepts]: Start accepts. Automaton has 224402 states and 384502 transitions. Word has length 984 [2020-10-14 01:34:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:34:29,777 INFO L479 AbstractCegarLoop]: Abstraction has 224402 states and 384502 transitions. [2020-10-14 01:34:29,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:34:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 224402 states and 384502 transitions. [2020-10-14 01:34:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 01:34:30,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:30,537 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:34:30,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:34:30,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:30,538 INFO L82 PathProgramCache]: Analyzing trace with hash 78821608, now seen corresponding path program 1 times [2020-10-14 01:34:30,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:30,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628267459] [2020-10-14 01:34:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:35,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:34:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:34:35,980 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:34:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:34:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:36,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:34:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:34:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:34:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:34:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:34:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:34:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:34:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:36,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 01:34:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:34:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 01:34:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:36,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:34:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:34:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 01:34:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:34:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 01:34:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:34:36,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:34:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:34:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 01:34:37,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628267459] [2020-10-14 01:34:37,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:34:37,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:34:37,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175085519] [2020-10-14 01:34:37,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:34:37,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:34:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:34:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:34:37,264 INFO L87 Difference]: Start difference. First operand 224402 states and 384502 transitions. Second operand 7 states. [2020-10-14 01:34:37,434 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130