/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:50:53,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:50:53,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:50:53,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:50:53,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:50:53,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:50:53,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:50:53,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:50:53,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:50:53,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:50:53,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:50:53,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:50:53,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:50:53,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:50:53,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:50:53,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:50:53,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:50:53,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:50:53,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:50:53,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:50:53,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:50:53,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:50:53,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:50:53,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:50:53,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:50:53,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:50:53,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:50:53,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:50:53,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:50:53,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:50:53,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:50:53,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:50:53,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:50:53,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:50:53,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:50:53,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:50:53,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:50:53,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:50:53,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:50:53,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:50:53,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:50:53,917 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 [2020-10-12 14:50:53,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:50:53,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:50:53,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:50:53,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:50:53,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:50:53,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:50:53,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:50:53,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:50:53,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:50:53,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:50:53,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:50:53,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:50:53,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:50:53,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:50:53,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:50:53,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:50:53,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:50:53,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:50:53,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:50:53,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:50:53,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:50:53,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:50:53,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:50:53,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:50:53,968 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:50:54,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:50:54,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:50:54,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:50:54,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:50:54,287 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:50:54,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2020-10-12 14:50:54,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3aa3239/ed72c083474648d08be1c61d5404807f/FLAGdc7a17e4f [2020-10-12 14:50:55,061 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:50:55,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2020-10-12 14:50:55,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3aa3239/ed72c083474648d08be1c61d5404807f/FLAGdc7a17e4f [2020-10-12 14:50:55,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3aa3239/ed72c083474648d08be1c61d5404807f [2020-10-12 14:50:55,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:50:55,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:50:55,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:55,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:50:55,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:50:55,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:55" (1/1) ... [2020-10-12 14:50:55,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25632e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:55, skipping insertion in model container [2020-10-12 14:50:55,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:55" (1/1) ... [2020-10-12 14:50:55,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:50:55,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:50:56,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:56,473 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:50:56,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:56,920 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:50:56,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56 WrapperNode [2020-10-12 14:50:56,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:56,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:50:56,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:50:56,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:50:56,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:56,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:57,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:50:57,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:50:57,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:50:57,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:50:57,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (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 [2020-10-12 14:50:57,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:50:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:50:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:50:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:50:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:50:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:50:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:50:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:50:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:50:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:50:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:50:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:50:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:51:06,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:51:06,151 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:51:06,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:06 BoogieIcfgContainer [2020-10-12 14:51:06,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:51:06,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:51:06,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:51:06,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:51:06,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:50:55" (1/3) ... [2020-10-12 14:51:06,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:06, skipping insertion in model container [2020-10-12 14:51:06,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56" (2/3) ... [2020-10-12 14:51:06,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:06, skipping insertion in model container [2020-10-12 14:51:06,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:06" (3/3) ... [2020-10-12 14:51:06,171 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label52.c [2020-10-12 14:51:06,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:51:06,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:51:06,208 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:51:06,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:51:06,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:51:06,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:51:06,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:51:06,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:51:06,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:51:06,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:51:06,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:51:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:51:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 14:51:06,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:06,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:06,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:06,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1725089009, now seen corresponding path program 1 times [2020-10-12 14:51:06,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:06,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947111753] [2020-10-12 14:51:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:06,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 14:51:06,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 14:51:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 14:51:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:51:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:06,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:06,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:06,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:51:06,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:06,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947111753] [2020-10-12 14:51:06,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:06,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:51:06,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914940794] [2020-10-12 14:51:06,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:51:06,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:06,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:51:06,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:51:06,862 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:51:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:24,117 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-12 14:51:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:51:24,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-12 14:51:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:24,151 INFO L225 Difference]: With dead ends: 1689 [2020-10-12 14:51:24,151 INFO L226 Difference]: Without dead ends: 1009 [2020-10-12 14:51:24,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:51:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-12 14:51:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-12 14:51:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-12 14:51:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-12 14:51:24,298 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 12 [2020-10-12 14:51:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:24,299 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-12 14:51:24,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:51:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-12 14:51:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 14:51:24,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:24,304 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] [2020-10-12 14:51:24,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:51:24,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1211840220, now seen corresponding path program 1 times [2020-10-12 14:51:24,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:24,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210163207] [2020-10-12 14:51:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:25,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 14:51:25,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-12 14:51:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:51:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:25,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:25,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:25,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:51:25,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:51:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 14:51:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:51:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:25,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210163207] [2020-10-12 14:51:25,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:25,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:51:25,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148610343] [2020-10-12 14:51:25,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:51:25,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:51:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:51:25,720 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 8 states. [2020-10-12 14:51:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:45,132 INFO L93 Difference]: Finished difference Result 2896 states and 4716 transitions. [2020-10-12 14:51:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:51:45,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-12 14:51:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:45,144 INFO L225 Difference]: With dead ends: 2896 [2020-10-12 14:51:45,144 INFO L226 Difference]: Without dead ends: 1911 [2020-10-12 14:51:45,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:51:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-12 14:51:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1896. [2020-10-12 14:51:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-10-12 14:51:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2508 transitions. [2020-10-12 14:51:45,212 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2508 transitions. Word has length 83 [2020-10-12 14:51:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:45,212 INFO L479 AbstractCegarLoop]: Abstraction has 1896 states and 2508 transitions. [2020-10-12 14:51:45,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:51:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2508 transitions. [2020-10-12 14:51:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 14:51:45,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:45,216 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] [2020-10-12 14:51:45,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:51:45,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1655733848, now seen corresponding path program 1 times [2020-10-12 14:51:45,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:45,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297503179] [2020-10-12 14:51:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:45,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:51:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-12 14:51:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:51:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 14:51:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:51:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:45,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:45,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:51:45,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:51:45,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:51:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:45,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297503179] [2020-10-12 14:51:45,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:45,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:51:45,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545390678] [2020-10-12 14:51:45,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:51:45,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:45,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:51:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:51:45,812 INFO L87 Difference]: Start difference. First operand 1896 states and 2508 transitions. Second operand 5 states. [2020-10-12 14:52:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:02,776 INFO L93 Difference]: Finished difference Result 4704 states and 6541 transitions. [2020-10-12 14:52:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:52:02,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-12 14:52:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:02,794 INFO L225 Difference]: With dead ends: 4704 [2020-10-12 14:52:02,795 INFO L226 Difference]: Without dead ends: 2796 [2020-10-12 14:52:02,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:52:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-10-12 14:52:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2789. [2020-10-12 14:52:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-12 14:52:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3433 transitions. [2020-10-12 14:52:02,876 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3433 transitions. Word has length 86 [2020-10-12 14:52:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:02,877 INFO L479 AbstractCegarLoop]: Abstraction has 2789 states and 3433 transitions. [2020-10-12 14:52:02,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:52:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3433 transitions. [2020-10-12 14:52:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 14:52:02,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:02,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:02,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:52:02,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:02,882 INFO L82 PathProgramCache]: Analyzing trace with hash -380342419, now seen corresponding path program 1 times [2020-10-12 14:52:02,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:02,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789462952] [2020-10-12 14:52:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:04,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 14:52:04,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-12 14:52:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-12 14:52:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 14:52:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:04,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:52:04,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:52:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:04,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:04,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:52:04,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:52:04,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 14:52:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 14:52:04,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789462952] [2020-10-12 14:52:04,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:04,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:52:04,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524121672] [2020-10-12 14:52:04,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:52:04,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:52:04,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:52:04,549 INFO L87 Difference]: Start difference. First operand 2789 states and 3433 transitions. Second operand 5 states. [2020-10-12 14:52:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:15,120 INFO L93 Difference]: Finished difference Result 5578 states and 7162 transitions. [2020-10-12 14:52:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:52:15,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-12 14:52:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:15,138 INFO L225 Difference]: With dead ends: 5578 [2020-10-12 14:52:15,138 INFO L226 Difference]: Without dead ends: 3228 [2020-10-12 14:52:15,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:52:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-10-12 14:52:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3223. [2020-10-12 14:52:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3223 states. [2020-10-12 14:52:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4140 transitions. [2020-10-12 14:52:15,227 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4140 transitions. Word has length 172 [2020-10-12 14:52:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:15,228 INFO L479 AbstractCegarLoop]: Abstraction has 3223 states and 4140 transitions. [2020-10-12 14:52:15,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:52:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4140 transitions. [2020-10-12 14:52:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 14:52:15,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:15,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:15,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:52:15,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash -736523095, now seen corresponding path program 1 times [2020-10-12 14:52:15,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:15,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831974520] [2020-10-12 14:52:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-12 14:52:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-10-12 14:52:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:52:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:52:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:52:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:18,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:18,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:52:18,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:52:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:18,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:18,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 14:52:18,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:52:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:52:18,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:19,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:52:19,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-12 14:52:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:52:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 14:52:19,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831974520] [2020-10-12 14:52:19,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:19,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:52:19,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204282670] [2020-10-12 14:52:19,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:52:19,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:19,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:52:19,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:52:19,195 INFO L87 Difference]: Start difference. First operand 3223 states and 4140 transitions. Second operand 8 states. [2020-10-12 14:52:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:43,494 INFO L93 Difference]: Finished difference Result 10622 states and 14077 transitions. [2020-10-12 14:52:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:52:43,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-10-12 14:52:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:43,543 INFO L225 Difference]: With dead ends: 10622 [2020-10-12 14:52:43,544 INFO L226 Difference]: Without dead ends: 7377 [2020-10-12 14:52:43,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:52:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2020-10-12 14:52:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7343. [2020-10-12 14:52:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7343 states. [2020-10-12 14:52:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7343 states to 7343 states and 9284 transitions. [2020-10-12 14:52:43,769 INFO L78 Accepts]: Start accepts. Automaton has 7343 states and 9284 transitions. Word has length 174 [2020-10-12 14:52:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:43,770 INFO L479 AbstractCegarLoop]: Abstraction has 7343 states and 9284 transitions. [2020-10-12 14:52:43,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:52:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7343 states and 9284 transitions. [2020-10-12 14:52:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-12 14:52:43,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:43,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:43,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:52:43,778 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:43,779 INFO L82 PathProgramCache]: Analyzing trace with hash -892769968, now seen corresponding path program 1 times [2020-10-12 14:52:43,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:43,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540177978] [2020-10-12 14:52:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-12 14:52:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4063 [2020-10-12 14:52:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-12 14:52:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 14:52:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:48,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:48,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:52:48,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:48,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:48,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 14:52:48,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:48,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:52:48,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 14:52:48,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-12 14:52:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:48,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:48,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:52:48,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:48,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 14:52:48,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:52:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 14:52:48,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540177978] [2020-10-12 14:52:48,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:48,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:52:48,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523016530] [2020-10-12 14:52:48,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:52:48,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:52:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:52:48,412 INFO L87 Difference]: Start difference. First operand 7343 states and 9284 transitions. Second operand 5 states. [2020-10-12 14:53:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:00,609 INFO L93 Difference]: Finished difference Result 19611 states and 25567 transitions. [2020-10-12 14:53:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:53:00,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-12 14:53:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:00,712 INFO L225 Difference]: With dead ends: 19611 [2020-10-12 14:53:00,712 INFO L226 Difference]: Without dead ends: 12707 [2020-10-12 14:53:00,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12707 states. [2020-10-12 14:53:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12707 to 12252. [2020-10-12 14:53:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12252 states. [2020-10-12 14:53:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12252 states to 12252 states and 15678 transitions. [2020-10-12 14:53:01,179 INFO L78 Accepts]: Start accepts. Automaton has 12252 states and 15678 transitions. Word has length 243 [2020-10-12 14:53:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:01,180 INFO L479 AbstractCegarLoop]: Abstraction has 12252 states and 15678 transitions. [2020-10-12 14:53:01,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:53:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 12252 states and 15678 transitions. [2020-10-12 14:53:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 14:53:01,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:01,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:01,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:53:01,187 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 461999705, now seen corresponding path program 1 times [2020-10-12 14:53:01,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:01,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871016756] [2020-10-12 14:53:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 14:53:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-12 14:53:04,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 14:53:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:53:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-12 14:53:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:53:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:53:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:04,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 14:53:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:53:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:53:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:53:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 14:53:04,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:53:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:53:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:53:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:05,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:05,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:53:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 14:53:05,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:53:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 9 proven. 140 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 14:53:05,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871016756] [2020-10-12 14:53:05,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:05,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:53:05,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886603473] [2020-10-12 14:53:05,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:53:05,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:53:05,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:53:05,317 INFO L87 Difference]: Start difference. First operand 12252 states and 15678 transitions. Second operand 9 states. [2020-10-12 14:53:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:28,026 INFO L93 Difference]: Finished difference Result 35345 states and 48054 transitions. [2020-10-12 14:53:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 14:53:28,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2020-10-12 14:53:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:28,139 INFO L225 Difference]: With dead ends: 35345 [2020-10-12 14:53:28,140 INFO L226 Difference]: Without dead ends: 21762 [2020-10-12 14:53:28,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:53:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states. [2020-10-12 14:53:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 15892. [2020-10-12 14:53:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15892 states. [2020-10-12 14:53:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15892 states to 15892 states and 20708 transitions. [2020-10-12 14:53:28,762 INFO L78 Accepts]: Start accepts. Automaton has 15892 states and 20708 transitions. Word has length 256 [2020-10-12 14:53:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:28,763 INFO L479 AbstractCegarLoop]: Abstraction has 15892 states and 20708 transitions. [2020-10-12 14:53:28,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:53:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15892 states and 20708 transitions. [2020-10-12 14:53:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-12 14:53:28,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:28,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:28,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:53:28,770 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:28,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:28,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1783306168, now seen corresponding path program 1 times [2020-10-12 14:53:28,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:28,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871368151] [2020-10-12 14:53:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-12 14:53:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:53:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2572 [2020-10-12 14:53:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 265 [2020-10-12 14:53:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 14:53:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:31,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:31,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:31,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:53:31,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:31,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:31,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:53:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-12 14:53:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:31,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:31,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:53:31,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 14:53:31,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:53:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 14:53:32,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871368151] [2020-10-12 14:53:32,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:32,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:53:32,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033787631] [2020-10-12 14:53:32,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:53:32,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:53:32,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:53:32,090 INFO L87 Difference]: Start difference. First operand 15892 states and 20708 transitions. Second operand 5 states. [2020-10-12 14:53:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:47,059 INFO L93 Difference]: Finished difference Result 38823 states and 50660 transitions. [2020-10-12 14:53:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:53:47,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-12 14:53:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:47,172 INFO L225 Difference]: With dead ends: 38823 [2020-10-12 14:53:47,172 INFO L226 Difference]: Without dead ends: 22495 [2020-10-12 14:53:47,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22495 states. [2020-10-12 14:53:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22495 to 18543. [2020-10-12 14:53:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18543 states. [2020-10-12 14:53:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18543 states to 18543 states and 23696 transitions. [2020-10-12 14:53:47,785 INFO L78 Accepts]: Start accepts. Automaton has 18543 states and 23696 transitions. Word has length 263 [2020-10-12 14:53:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:47,787 INFO L479 AbstractCegarLoop]: Abstraction has 18543 states and 23696 transitions. [2020-10-12 14:53:47,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:53:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 18543 states and 23696 transitions. [2020-10-12 14:53:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 14:53:47,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:47,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:47,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:53:47,795 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:47,795 INFO L82 PathProgramCache]: Analyzing trace with hash 450619740, now seen corresponding path program 1 times [2020-10-12 14:53:47,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:47,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954602116] [2020-10-12 14:53:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-12 14:53:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4795 [2020-10-12 14:53:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:53:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-12 14:53:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 14:53:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:52,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:52,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:52,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:52,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:53:52,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:52,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:52,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:52,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:52,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:52,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:53:52,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:53,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:53:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 14:53:53,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 14:53:53,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-12 14:53:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:53,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:53:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:53,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 14:53:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:53:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:53:53,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954602116] [2020-10-12 14:53:53,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:53,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:53:53,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361113937] [2020-10-12 14:53:53,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:53:53,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:53:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:53,665 INFO L87 Difference]: Start difference. First operand 18543 states and 23696 transitions. Second operand 6 states. [2020-10-12 14:54:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:10,131 INFO L93 Difference]: Finished difference Result 41210 states and 54232 transitions. [2020-10-12 14:54:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:54:10,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-12 14:54:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:10,215 INFO L225 Difference]: With dead ends: 41210 [2020-10-12 14:54:10,215 INFO L226 Difference]: Without dead ends: 21736 [2020-10-12 14:54:10,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:54:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21736 states. [2020-10-12 14:54:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21736 to 21561. [2020-10-12 14:54:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21561 states. [2020-10-12 14:54:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 26936 transitions. [2020-10-12 14:54:10,691 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 26936 transitions. Word has length 270 [2020-10-12 14:54:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:10,692 INFO L479 AbstractCegarLoop]: Abstraction has 21561 states and 26936 transitions. [2020-10-12 14:54:10,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:54:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 26936 transitions. [2020-10-12 14:54:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 14:54:10,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:10,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:54:10,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:54:10,699 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:10,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1838192648, now seen corresponding path program 1 times [2020-10-12 14:54:10,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:10,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692157296] [2020-10-12 14:54:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:13,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:54:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:54:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-12 14:54:13,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:54:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:54:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:13,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:54:13,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:13,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:13,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 14:54:13,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:54:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:14,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:14,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:54:14,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:14,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 14:54:14,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 14:54:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-12 14:54:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:54:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 14:54:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 14:54:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 103 proven. 96 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 14:54:14,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692157296] [2020-10-12 14:54:14,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:14,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:54:14,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95772632] [2020-10-12 14:54:14,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:14,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:14,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:14,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:14,459 INFO L87 Difference]: Start difference. First operand 21561 states and 26936 transitions. Second operand 7 states. [2020-10-12 14:54:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:30,557 INFO L93 Difference]: Finished difference Result 44430 states and 55667 transitions. [2020-10-12 14:54:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:54:30,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-12 14:54:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:30,618 INFO L225 Difference]: With dead ends: 44430 [2020-10-12 14:54:30,619 INFO L226 Difference]: Without dead ends: 22875 [2020-10-12 14:54:30,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:54:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22875 states. [2020-10-12 14:54:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22875 to 22871. [2020-10-12 14:54:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22871 states. [2020-10-12 14:54:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22871 states to 22871 states and 27101 transitions. [2020-10-12 14:54:31,012 INFO L78 Accepts]: Start accepts. Automaton has 22871 states and 27101 transitions. Word has length 296 [2020-10-12 14:54:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:31,013 INFO L479 AbstractCegarLoop]: Abstraction has 22871 states and 27101 transitions. [2020-10-12 14:54:31,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:54:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22871 states and 27101 transitions. [2020-10-12 14:54:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 14:54:31,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:31,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:54:31,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:54:31,025 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1486248114, now seen corresponding path program 1 times [2020-10-12 14:54:31,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:31,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624356678] [2020-10-12 14:54:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:54:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:54:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2493 [2020-10-12 14:54:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 14:54:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:54:33,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:33,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:33,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:54:33,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:54:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 14:54:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:54:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:54:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:34,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:34,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 14:54:34,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 14:54:34,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 14:54:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:54:34,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624356678] [2020-10-12 14:54:34,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:34,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:54:34,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131614401] [2020-10-12 14:54:34,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:54:34,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:34,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:54:34,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:54:34,521 INFO L87 Difference]: Start difference. First operand 22871 states and 27101 transitions. Second operand 6 states.