/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:47,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:47,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:47,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:47,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:47,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:47,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:47,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:47,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:47,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:47,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:47,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:47,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:47,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:47,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:47,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:47,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:47,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:47,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:47,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:47,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:47,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:47,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:47,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:47,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:47,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:47,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:47,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:47,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:47,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:47,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:47,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:47,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:47,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:47,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:47,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:47,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:47,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:47,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:47,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:47,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:47,223 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 [2020-09-25 05:36:47,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:47,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:47,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:47,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:47,252 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:47,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:47,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:47,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:47,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:47,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:47,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:47,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:47,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:47,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:47,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:47,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:47,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:47,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:47,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:47,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:47,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:47,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:47,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:47,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:47,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:47,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:47,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:47,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:47,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:47,257 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:36:47,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:47,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:47,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:47,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:47,774 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:47,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 05:36:47,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a0579c64/d33b39daf3a544cdbde9e034d4c81bed/FLAGbbb9981b1 [2020-09-25 05:36:48,601 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:48,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 05:36:48,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a0579c64/d33b39daf3a544cdbde9e034d4c81bed/FLAGbbb9981b1 [2020-09-25 05:36:48,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a0579c64/d33b39daf3a544cdbde9e034d4c81bed [2020-09-25 05:36:48,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:48,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:48,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:48,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:48,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:48,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:48" (1/1) ... [2020-09-25 05:36:48,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:48, skipping insertion in model container [2020-09-25 05:36:48,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:48" (1/1) ... [2020-09-25 05:36:48,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:48,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:49,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:49,470 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:49,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:49,678 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:49,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49 WrapperNode [2020-09-25 05:36:49,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:49,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:49,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:49,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:49,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:49,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:49,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:49,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:49,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (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 [2020-09-25 05:36:49,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:51,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:51,495 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:51,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:51 BoogieIcfgContainer [2020-09-25 05:36:51,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:51,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:51,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:51,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:51,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:48" (1/3) ... [2020-09-25 05:36:51,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:51, skipping insertion in model container [2020-09-25 05:36:51,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49" (2/3) ... [2020-09-25 05:36:51,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:51, skipping insertion in model container [2020-09-25 05:36:51,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:51" (3/3) ... [2020-09-25 05:36:51,526 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 05:36:51,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:51,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:51,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:51,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:51,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:51,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:51,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:51,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:51,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:51,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:51,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 05:36:51,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:51,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:51,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 05:36:51,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:51,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 05:36:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 05:36:57,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-09-25 05:36:57,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:36:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 05:36:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:36:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:36:57,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:36:57,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:57,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 05:36:57,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:57,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:36:57,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978842133] [2020-09-25 05:36:57,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:57,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:57,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:57,447 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 05:37:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:00,551 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 05:37:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:37:00,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 05:37:00,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:00,582 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 05:37:00,582 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 05:37:00,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 05:37:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 05:37:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 05:37:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 05:37:00,722 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 126 [2020-09-25 05:37:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:00,723 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 05:37:00,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 05:37:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:37:00,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:00,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:00,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:00,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2026408437, now seen corresponding path program 1 times [2020-09-25 05:37:00,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:00,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821353180] [2020-09-25 05:37:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 05:37:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:37:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 05:37:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:37:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:06,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:06,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821353180] [2020-09-25 05:37:06,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:06,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:06,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413549569] [2020-09-25 05:37:06,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:06,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:06,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:06,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:06,054 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 05:37:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:08,316 INFO L93 Difference]: Finished difference Result 2247 states and 2909 transitions. [2020-09-25 05:37:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:08,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 05:37:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:08,329 INFO L225 Difference]: With dead ends: 2247 [2020-09-25 05:37:08,330 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 05:37:08,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 05:37:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1336. [2020-09-25 05:37:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 05:37:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1631 transitions. [2020-09-25 05:37:08,412 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1631 transitions. Word has length 144 [2020-09-25 05:37:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:08,415 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1631 transitions. [2020-09-25 05:37:08,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1631 transitions. [2020-09-25 05:37:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 05:37:08,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:08,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:08,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:08,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -149723680, now seen corresponding path program 1 times [2020-09-25 05:37:08,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:08,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024006257] [2020-09-25 05:37:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 05:37:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:37:13,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:13,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:37:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 05:37:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:13,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:13,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:13,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:13,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:37:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:37:13,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:13,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:37:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:13,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024006257] [2020-09-25 05:37:13,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:13,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:13,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058579203] [2020-09-25 05:37:13,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:13,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:13,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:13,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:13,755 INFO L87 Difference]: Start difference. First operand 1336 states and 1631 transitions. Second operand 5 states. [2020-09-25 05:37:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:15,948 INFO L93 Difference]: Finished difference Result 3603 states and 4612 transitions. [2020-09-25 05:37:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:15,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 05:37:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:15,965 INFO L225 Difference]: With dead ends: 3603 [2020-09-25 05:37:15,965 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 05:37:15,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 05:37:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2249. [2020-09-25 05:37:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 05:37:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2723 transitions. [2020-09-25 05:37:16,067 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2723 transitions. Word has length 150 [2020-09-25 05:37:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:16,067 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2723 transitions. [2020-09-25 05:37:16,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2723 transitions. [2020-09-25 05:37:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:37:16,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:16,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:16,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:16,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash 537580245, now seen corresponding path program 1 times [2020-09-25 05:37:16,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:16,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403470972] [2020-09-25 05:37:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 05:37:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 05:37:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:21,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:37:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:37:21,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:37:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:21,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:37:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:37:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:21,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403470972] [2020-09-25 05:37:21,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:21,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:21,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478614930] [2020-09-25 05:37:21,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:21,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:21,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:21,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:21,441 INFO L87 Difference]: Start difference. First operand 2249 states and 2723 transitions. Second operand 5 states. [2020-09-25 05:37:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:23,196 INFO L93 Difference]: Finished difference Result 5438 states and 6872 transitions. [2020-09-25 05:37:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:23,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 05:37:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:23,218 INFO L225 Difference]: With dead ends: 5438 [2020-09-25 05:37:23,219 INFO L226 Difference]: Without dead ends: 3211 [2020-09-25 05:37:23,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-09-25 05:37:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3011. [2020-09-25 05:37:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-09-25 05:37:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3640 transitions. [2020-09-25 05:37:23,347 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3640 transitions. Word has length 161 [2020-09-25 05:37:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:23,348 INFO L479 AbstractCegarLoop]: Abstraction has 3011 states and 3640 transitions. [2020-09-25 05:37:23,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3640 transitions. [2020-09-25 05:37:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:37:23,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:23,359 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:23,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:23,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1033135550, now seen corresponding path program 1 times [2020-09-25 05:37:23,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:23,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369633707] [2020-09-25 05:37:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:37:28,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:37:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:37:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:37:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:28,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:37:28,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:28,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:28,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:37:28,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:37:28,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:28,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369633707] [2020-09-25 05:37:28,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:28,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:28,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366897150] [2020-09-25 05:37:28,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:28,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:28,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:28,598 INFO L87 Difference]: Start difference. First operand 3011 states and 3640 transitions. Second operand 7 states. [2020-09-25 05:37:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:31,070 INFO L93 Difference]: Finished difference Result 7308 states and 9243 transitions. [2020-09-25 05:37:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:31,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 05:37:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:31,100 INFO L225 Difference]: With dead ends: 7308 [2020-09-25 05:37:31,101 INFO L226 Difference]: Without dead ends: 4319 [2020-09-25 05:37:31,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2020-09-25 05:37:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3624. [2020-09-25 05:37:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-09-25 05:37:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4401 transitions. [2020-09-25 05:37:31,312 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4401 transitions. Word has length 163 [2020-09-25 05:37:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:31,312 INFO L479 AbstractCegarLoop]: Abstraction has 3624 states and 4401 transitions. [2020-09-25 05:37:31,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4401 transitions. [2020-09-25 05:37:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 05:37:31,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:31,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:31,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:31,328 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:31,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1209881623, now seen corresponding path program 1 times [2020-09-25 05:37:31,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:31,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086103540] [2020-09-25 05:37:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking...