/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:32,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:32,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:32,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:32,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:32,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:32,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:32,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:32,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:32,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:32,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:32,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:32,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:32,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:32,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:32,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:32,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:32,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:32,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:32,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:32,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:32,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:32,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:32,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:32,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:32,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:32,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:32,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:32,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:32,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:32,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:32,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:32,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:32,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:32,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:32,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:32,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:32,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:32,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:32,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:32,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:32,484 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 01:09:32,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:32,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:32,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:32,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:32,537 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:32,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:32,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:32,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:32,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:32,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:32,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:32,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:32,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:32,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:32,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:32,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:32,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:32,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:32,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:32,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:32,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:32,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:32,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:32,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:32,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:32,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:32,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:32,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:32,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:32,544 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:09:33,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:33,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:33,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:33,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:33,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:33,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-09-25 01:09:33,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3940b3d/e348250ba64d420baa377fe3a200af3c/FLAGcc62b3a26 [2020-09-25 01:09:33,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:33,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-09-25 01:09:33,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3940b3d/e348250ba64d420baa377fe3a200af3c/FLAGcc62b3a26 [2020-09-25 01:09:34,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3940b3d/e348250ba64d420baa377fe3a200af3c [2020-09-25 01:09:34,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:34,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:34,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:34,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:34,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:34,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34, skipping insertion in model container [2020-09-25 01:09:34,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:34,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:34,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:34,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:34,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:34,625 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34 WrapperNode [2020-09-25 01:09:34,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:34,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:34,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:34,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:34,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (1/1) ... [2020-09-25 01:09:34,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:34,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:34,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:34,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:34,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (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 01:09:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:09:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-09-25 01:09:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:09:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:09:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:09:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:35,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:35,465 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 01:09:35,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:35 BoogieIcfgContainer [2020-09-25 01:09:35,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:35,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:35,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:35,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:35,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:34" (1/3) ... [2020-09-25 01:09:35,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f176d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:35, skipping insertion in model container [2020-09-25 01:09:35,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:34" (2/3) ... [2020-09-25 01:09:35,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f176d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:35, skipping insertion in model container [2020-09-25 01:09:35,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:35" (3/3) ... [2020-09-25 01:09:35,483 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-09-25 01:09:35,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:35,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:35,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:35,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:35,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:35,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:35,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:35,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:35,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:35,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:35,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-25 01:09:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:09:35,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:35,625 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] [2020-09-25 01:09:35,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:35,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1445504148, now seen corresponding path program 1 times [2020-09-25 01:09:35,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:35,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672440793] [2020-09-25 01:09:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:36,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:09:36,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:09:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-09-25 01:09:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:09:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:09:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:09:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:09:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:37,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:37,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:09:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 01:09:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:37,126 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 01:09:37,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672440793] [2020-09-25 01:09:37,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:37,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:09:37,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733347055] [2020-09-25 01:09:37,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:09:37,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:09:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:09:37,167 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 8 states. [2020-09-25 01:09:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:38,167 INFO L93 Difference]: Finished difference Result 377 states and 446 transitions. [2020-09-25 01:09:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:09:38,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-25 01:09:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:38,191 INFO L225 Difference]: With dead ends: 377 [2020-09-25 01:09:38,191 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 01:09:38,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:09:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 01:09:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2020-09-25 01:09:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 01:09:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-09-25 01:09:38,314 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 30 [2020-09-25 01:09:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:38,316 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-09-25 01:09:38,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:09:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-09-25 01:09:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 01:09:38,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:38,320 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] [2020-09-25 01:09:38,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:38,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash -905808642, now seen corresponding path program 1 times [2020-09-25 01:09:38,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:38,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688387131] [2020-09-25 01:09:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:39,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 01:09:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:09:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-09-25 01:09:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:09:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:09:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 01:09:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:09:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:09:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:39,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:39,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688387131] [2020-09-25 01:09:39,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:39,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:09:39,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138174273] [2020-09-25 01:09:39,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:09:39,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:39,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:09:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:09:39,604 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-09-25 01:09:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:40,323 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-09-25 01:09:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 01:09:40,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-09-25 01:09:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:40,327 INFO L225 Difference]: With dead ends: 108 [2020-09-25 01:09:40,327 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 01:09:40,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:09:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 01:09:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 81. [2020-09-25 01:09:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 01:09:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 01:09:40,362 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 39 [2020-09-25 01:09:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:40,364 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 01:09:40,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:09:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 01:09:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 01:09:40,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:40,372 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:09:40,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:09:40,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:40,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1206774819, now seen corresponding path program 1 times [2020-09-25 01:09:40,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:40,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578429958] [2020-09-25 01:09:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:09:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 01:09:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 01:09:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:09:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:09:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 01:09:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:45,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:09:45,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:09:45,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:09:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 01:09:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:09:45,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578429958] [2020-09-25 01:09:45,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:45,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:09:45,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000404357] [2020-09-25 01:09:45,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:09:45,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:09:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:09:45,713 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 12 states. [2020-09-25 01:09:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:46,656 INFO L93 Difference]: Finished difference Result 155 states and 174 transitions. [2020-09-25 01:09:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 01:09:46,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-09-25 01:09:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:46,665 INFO L225 Difference]: With dead ends: 155 [2020-09-25 01:09:46,665 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 01:09:46,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2020-09-25 01:09:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 01:09:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 90. [2020-09-25 01:09:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 01:09:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-09-25 01:09:46,690 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 61 [2020-09-25 01:09:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:46,692 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-09-25 01:09:46,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:09:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-09-25 01:09:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 01:09:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:46,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:46,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:09:46,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:46,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1161712723, now seen corresponding path program 2 times [2020-09-25 01:09:46,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:46,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580080489] [2020-09-25 01:09:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 01:09:51,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:09:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 01:09:51,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:09:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:09:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 01:09:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:09:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:09:51,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:09:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:51,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:09:51,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:09:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:09:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:51,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580080489] [2020-09-25 01:09:51,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:51,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:09:51,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897173028] [2020-09-25 01:09:51,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:09:51,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:51,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:09:51,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:09:51,956 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 10 states. [2020-09-25 01:09:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:52,257 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2020-09-25 01:09:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:09:52,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 01:09:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:52,259 INFO L225 Difference]: With dead ends: 185 [2020-09-25 01:09:52,259 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 01:09:52,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:09:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 01:09:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-09-25 01:09:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:09:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-09-25 01:09:52,276 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 70 [2020-09-25 01:09:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:52,278 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-09-25 01:09:52,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:09:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-09-25 01:09:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 01:09:52,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:52,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 01:09:52,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:09:52,281 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash -344437953, now seen corresponding path program 3 times [2020-09-25 01:09:52,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:52,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22292866] [2020-09-25 01:09:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:57,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 01:09:57,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:09:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 01:09:57,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:09:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:09:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 01:09:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:09:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:09:57,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 01:09:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:57,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:57,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:09:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:09:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:09:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:57,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22292866] [2020-09-25 01:09:57,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:57,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:09:57,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121527426] [2020-09-25 01:09:57,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:09:57,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:57,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:09:57,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:09:57,503 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 12 states. [2020-09-25 01:09:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:57,900 INFO L93 Difference]: Finished difference Result 206 states and 229 transitions. [2020-09-25 01:09:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:09:57,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-09-25 01:09:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:57,904 INFO L225 Difference]: With dead ends: 206 [2020-09-25 01:09:57,904 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 01:09:57,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:09:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 01:09:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2020-09-25 01:09:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 01:09:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-09-25 01:09:57,921 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 79 [2020-09-25 01:09:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:57,923 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-09-25 01:09:57,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:09:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-09-25 01:09:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 01:09:57,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:57,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 01:09:57,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:09:57,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:57,927 INFO L82 PathProgramCache]: Analyzing trace with hash 380047341, now seen corresponding path program 4 times [2020-09-25 01:09:57,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:57,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611391610] [2020-09-25 01:09:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 01:10:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:10:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 01:10:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:10:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:10:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 01:10:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:03,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:03,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:10:03,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:10:03,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 01:10:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 5 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 01:10:03,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611391610] [2020-09-25 01:10:03,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:03,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:10:03,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847192444] [2020-09-25 01:10:03,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:10:03,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:03,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:10:03,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:10:03,120 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 12 states. [2020-09-25 01:10:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:03,947 INFO L93 Difference]: Finished difference Result 245 states and 271 transitions. [2020-09-25 01:10:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 01:10:03,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-09-25 01:10:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:03,951 INFO L225 Difference]: With dead ends: 245 [2020-09-25 01:10:03,951 INFO L226 Difference]: Without dead ends: 170 [2020-09-25 01:10:03,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=934, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 01:10:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-25 01:10:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 109. [2020-09-25 01:10:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 01:10:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2020-09-25 01:10:03,971 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 88 [2020-09-25 01:10:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:03,971 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2020-09-25 01:10:03,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:10:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2020-09-25 01:10:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 01:10:03,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:03,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 01:10:03,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:10:03,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:03,979 INFO L82 PathProgramCache]: Analyzing trace with hash -473977089, now seen corresponding path program 5 times [2020-09-25 01:10:03,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:03,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852719073] [2020-09-25 01:10:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 01:10:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 01:10:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 01:10:09,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:10:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 01:10:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:10:09,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 01:10:09,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 01:10:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:09,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:09,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 01:10:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-25 01:10:09,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852719073] [2020-09-25 01:10:09,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:09,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:09,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612820102] [2020-09-25 01:10:09,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:09,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:09,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:09,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:09,176 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 5 states. [2020-09-25 01:10:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:09,419 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2020-09-25 01:10:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:10:09,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-09-25 01:10:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:09,420 INFO L225 Difference]: With dead ends: 240 [2020-09-25 01:10:09,421 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 01:10:09,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 01:10:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 109. [2020-09-25 01:10:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 01:10:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-09-25 01:10:09,440 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 97 [2020-09-25 01:10:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:09,440 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-09-25 01:10:09,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-09-25 01:10:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 01:10:09,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:09,442 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 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 01:10:09,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:10:09,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:09,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2108507974, now seen corresponding path program 1 times [2020-09-25 01:10:09,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:09,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867145315] [2020-09-25 01:10:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:10:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:10:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 01:10:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:14,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:10:14,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:10:14,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:14,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 01:10:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:14,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:14,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:14,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:14,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:14,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:14,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:14,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 5 proven. 96 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 01:10:14,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867145315] [2020-09-25 01:10:14,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:14,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:10:14,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380562088] [2020-09-25 01:10:14,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:10:14,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:14,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:10:14,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:14,677 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 9 states. [2020-09-25 01:10:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:15,207 INFO L93 Difference]: Finished difference Result 206 states and 222 transitions. [2020-09-25 01:10:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:10:15,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-09-25 01:10:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:15,211 INFO L225 Difference]: With dead ends: 206 [2020-09-25 01:10:15,212 INFO L226 Difference]: Without dead ends: 204 [2020-09-25 01:10:15,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:10:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-25 01:10:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 191. [2020-09-25 01:10:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 01:10:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 207 transitions. [2020-09-25 01:10:15,239 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 207 transitions. Word has length 100 [2020-09-25 01:10:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:15,242 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 207 transitions. [2020-09-25 01:10:15,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:10:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 207 transitions. [2020-09-25 01:10:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 01:10:15,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:15,247 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 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] [2020-09-25 01:10:15,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 01:10:15,248 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 494220679, now seen corresponding path program 2 times [2020-09-25 01:10:15,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:15,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653038130] [2020-09-25 01:10:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 01:10:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 01:10:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:10:20,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:10:20,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 01:10:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:10:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 01:10:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:20,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:20,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:20,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 01:10:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 212 proven. 128 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 01:10:20,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653038130] [2020-09-25 01:10:20,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:20,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 01:10:20,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81171420] [2020-09-25 01:10:20,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 01:10:20,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:20,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 01:10:20,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:10:20,829 INFO L87 Difference]: Start difference. First operand 191 states and 207 transitions. Second operand 21 states.