/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=0.2 --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/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:06,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:06,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:06,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:06,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:06,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:06,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:06,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:06,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:06,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:06,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:06,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:06,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:06,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:06,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:06,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:06,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:06,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:06,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:06,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:06,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:06,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:06,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:06,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:06,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:06,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:06,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:06,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:06,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:06,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:06,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:06,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:06,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:06,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:06,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:06,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:06,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:06,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:06,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:06,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:06,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:06,333 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 04:29:06,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:06,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:06,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:06,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:06,390 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:06,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:06,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:06,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:06,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:06,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:06,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:06,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:06,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:06,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:06,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:06,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:06,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:06,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:06,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:06,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:06,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:06,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:06,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:06,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:06,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:06,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:06,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:06,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:06,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:06,397 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:29:06,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:06,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:06,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:06,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:06,909 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:06,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 04:29:06,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e7ec8fcb/de5264dd1e1f441c8b0fdba6769aa35a/FLAG8cf1772da [2020-09-25 04:29:07,653 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:07,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 04:29:07,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e7ec8fcb/de5264dd1e1f441c8b0fdba6769aa35a/FLAG8cf1772da [2020-09-25 04:29:07,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e7ec8fcb/de5264dd1e1f441c8b0fdba6769aa35a [2020-09-25 04:29:07,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:07,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:07,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:07,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:07,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:07,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:07" (1/1) ... [2020-09-25 04:29:07,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47016e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:07, skipping insertion in model container [2020-09-25 04:29:07,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:07" (1/1) ... [2020-09-25 04:29:07,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:08,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:08,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:08,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:08,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:08,795 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:08,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08 WrapperNode [2020-09-25 04:29:08,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:08,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:08,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:08,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:08,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (1/1) ... [2020-09-25 04:29:08,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:08,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:08,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:08,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:08,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (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 04:29:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:09,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:10,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:10,627 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:10,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:10 BoogieIcfgContainer [2020-09-25 04:29:10,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:10,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:10,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:10,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:10,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:07" (1/3) ... [2020-09-25 04:29:10,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4809362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:10, skipping insertion in model container [2020-09-25 04:29:10,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:08" (2/3) ... [2020-09-25 04:29:10,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4809362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:10, skipping insertion in model container [2020-09-25 04:29:10,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:10" (3/3) ... [2020-09-25 04:29:10,648 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 04:29:10,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:10,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:10,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:10,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:10,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:10,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:10,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:10,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:10,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:10,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:10,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 04:29:10,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:10,787 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] [2020-09-25 04:29:10,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 04:29:10,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:10,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915609023] [2020-09-25 04:29:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:29:12,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-09-25 04:29:12,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:12,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:29:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:12,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:12,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:29:12,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:12,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:12,354 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 04:29:12,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915609023] [2020-09-25 04:29:12,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:12,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:29:12,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950688204] [2020-09-25 04:29:12,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:12,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:12,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:12,394 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 04:29:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:15,839 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 04:29:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:29:15,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-25 04:29:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:15,885 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 04:29:15,885 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 04:29:15,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 04:29:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 04:29:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 04:29:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 04:29:16,017 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 55 [2020-09-25 04:29:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:16,018 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 04:29:16,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 04:29:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 04:29:16,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:16,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:16,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:16,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 04:29:16,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:16,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959181676] [2020-09-25 04:29:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:29:18,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-09-25 04:29:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:18,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:29:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:29:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:29:19,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:19,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:19,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:19,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 04:29:19,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:19,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:29:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:19,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959181676] [2020-09-25 04:29:19,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:19,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:19,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361495859] [2020-09-25 04:29:19,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:19,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:19,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:19,218 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 04:29:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:20,942 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 04:29:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:20,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 04:29:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:20,951 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 04:29:20,951 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 04:29:20,955 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 [2020-09-25 04:29:20,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 04:29:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 04:29:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 04:29:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 04:29:21,022 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 134 [2020-09-25 04:29:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:21,025 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 04:29:21,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 04:29:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:29:21,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:21,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:21,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:21,045 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash -58375918, now seen corresponding path program 1 times [2020-09-25 04:29:21,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:21,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377427212] [2020-09-25 04:29:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:29:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-09-25 04:29:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:29:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:29:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:23,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:23,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:29:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:23,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377427212] [2020-09-25 04:29:23,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:23,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:29:23,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985348857] [2020-09-25 04:29:23,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:29:23,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:29:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:23,684 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 6 states. [2020-09-25 04:29:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:26,104 INFO L93 Difference]: Finished difference Result 3146 states and 4352 transitions. [2020-09-25 04:29:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:29:26,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 04:29:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:26,123 INFO L225 Difference]: With dead ends: 3146 [2020-09-25 04:29:26,123 INFO L226 Difference]: Without dead ends: 2272 [2020-09-25 04:29:26,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-09-25 04:29:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2252. [2020-09-25 04:29:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2020-09-25 04:29:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2865 transitions. [2020-09-25 04:29:26,214 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2865 transitions. Word has length 146 [2020-09-25 04:29:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:26,216 INFO L479 AbstractCegarLoop]: Abstraction has 2252 states and 2865 transitions. [2020-09-25 04:29:26,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:29:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2865 transitions. [2020-09-25 04:29:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 04:29:26,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:26,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:26,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:26,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash -442827895, now seen corresponding path program 1 times [2020-09-25 04:29:26,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:26,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387002989] [2020-09-25 04:29:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:31,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 04:29:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:29:31,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:31,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:31,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:29:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:31,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:31,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:31,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:29:31,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:31,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:29:31,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:31,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:29:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 04:29:31,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:31,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 04:29:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:31,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387002989] [2020-09-25 04:29:31,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:31,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:31,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724652533] [2020-09-25 04:29:31,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:31,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:31,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:31,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:31,724 INFO L87 Difference]: Start difference. First operand 2252 states and 2865 transitions. Second operand 7 states. [2020-09-25 04:29:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:34,045 INFO L93 Difference]: Finished difference Result 5095 states and 6841 transitions. [2020-09-25 04:29:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:29:34,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-09-25 04:29:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:34,066 INFO L225 Difference]: With dead ends: 5095 [2020-09-25 04:29:34,067 INFO L226 Difference]: Without dead ends: 3008 [2020-09-25 04:29:34,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-09-25 04:29:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2594. [2020-09-25 04:29:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-09-25 04:29:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3297 transitions. [2020-09-25 04:29:34,180 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3297 transitions. Word has length 223 [2020-09-25 04:29:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:34,181 INFO L479 AbstractCegarLoop]: Abstraction has 2594 states and 3297 transitions. [2020-09-25 04:29:34,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3297 transitions. [2020-09-25 04:29:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 04:29:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:34,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:29:34,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:34,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash 373108045, now seen corresponding path program 1 times [2020-09-25 04:29:34,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:34,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810682598] [2020-09-25 04:29:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:39,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 04:29:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:29:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:39,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:29:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:29:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:39,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:39,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:29:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:39,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:29:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:29:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:29:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 04:29:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:39,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:29:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:39,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810682598] [2020-09-25 04:29:39,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:39,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:39,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277563294] [2020-09-25 04:29:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:39,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:39,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:39,963 INFO L87 Difference]: Start difference. First operand 2594 states and 3297 transitions. Second operand 8 states. [2020-09-25 04:29:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:42,675 INFO L93 Difference]: Finished difference Result 5505 states and 7141 transitions. [2020-09-25 04:29:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:29:42,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 04:29:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:42,699 INFO L225 Difference]: With dead ends: 5505 [2020-09-25 04:29:42,700 INFO L226 Difference]: Without dead ends: 3076 [2020-09-25 04:29:42,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:29:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-09-25 04:29:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3064. [2020-09-25 04:29:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2020-09-25 04:29:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 3781 transitions. [2020-09-25 04:29:42,842 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 3781 transitions. Word has length 236 [2020-09-25 04:29:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:42,846 INFO L479 AbstractCegarLoop]: Abstraction has 3064 states and 3781 transitions. [2020-09-25 04:29:42,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 3781 transitions. [2020-09-25 04:29:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 04:29:42,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:42,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:42,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:42,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1838480665, now seen corresponding path program 1 times [2020-09-25 04:29:42,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:42,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417172702] [2020-09-25 04:29:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 04:29:47,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 04:29:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:47,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:29:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:29:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:29:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:29:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:29:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:29:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 04:29:48,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:48,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:29:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:48,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417172702] [2020-09-25 04:29:48,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:48,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:48,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392039720] [2020-09-25 04:29:48,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:48,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:48,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:48,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:48,631 INFO L87 Difference]: Start difference. First operand 3064 states and 3781 transitions. Second operand 7 states. [2020-09-25 04:29:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:51,028 INFO L93 Difference]: Finished difference Result 6835 states and 8601 transitions. [2020-09-25 04:29:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:51,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 04:29:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:51,043 INFO L225 Difference]: With dead ends: 6835 [2020-09-25 04:29:51,043 INFO L226 Difference]: Without dead ends: 2646 [2020-09-25 04:29:51,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:29:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-09-25 04:29:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2538. [2020-09-25 04:29:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-09-25 04:29:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 2926 transitions. [2020-09-25 04:29:51,123 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 2926 transitions. Word has length 246 [2020-09-25 04:29:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:51,123 INFO L479 AbstractCegarLoop]: Abstraction has 2538 states and 2926 transitions. [2020-09-25 04:29:51,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 2926 transitions. [2020-09-25 04:29:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 04:29:51,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:51,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:51,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:29:51,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:51,131 INFO L82 PathProgramCache]: Analyzing trace with hash -95692249, now seen corresponding path program 1 times [2020-09-25 04:29:51,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:51,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514869614] [2020-09-25 04:29:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking...