/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:09:20,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:09:20,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:09:20,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:09:20,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:09:20,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:09:20,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:09:20,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:09:20,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:09:20,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:09:20,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:09:20,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:09:20,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:09:20,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:09:20,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:09:20,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:09:20,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:09:20,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:09:20,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:09:20,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:09:20,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:09:20,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:09:20,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:09:20,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:09:20,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:09:20,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:09:20,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:09:20,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:09:20,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:09:20,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:09:20,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:09:20,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:09:20,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:09:20,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:09:20,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:09:20,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:09:20,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:09:20,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:09:20,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:09:20,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:09:20,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:09:20,468 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 [2020-09-24 16:09:20,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:09:20,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:09:20,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:09:20,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:09:20,497 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:09:20,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:09:20,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:09:20,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:09:20,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:09:20,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:09:20,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:09:20,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:09:20,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:09:20,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:09:20,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:09:20,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:09:20,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:09:20,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:09:20,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:09:20,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:09:20,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:09:20,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:09:20,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:09:20,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:09:20,502 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:09:20,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:09:21,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:09:21,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:09:21,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:09:21,031 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:09:21,032 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 16:09:21,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68f2fcb99/1f8a71a85efc423fa503647a2c679ab6/FLAGa7a83979d [2020-09-24 16:09:21,707 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:09:21,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 16:09:21,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68f2fcb99/1f8a71a85efc423fa503647a2c679ab6/FLAGa7a83979d [2020-09-24 16:09:22,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68f2fcb99/1f8a71a85efc423fa503647a2c679ab6 [2020-09-24 16:09:22,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:09:22,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:09:22,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:09:22,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:09:22,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:09:22,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab12f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22, skipping insertion in model container [2020-09-24 16:09:22,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:09:22,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:09:22,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:09:22,366 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:09:22,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:09:22,420 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:09:22,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22 WrapperNode [2020-09-24 16:09:22,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:09:22,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:09:22,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:09:22,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:09:22,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (1/1) ... [2020-09-24 16:09:22,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:09:22,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:09:22,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:09:22,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:09:22,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (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 [2020-09-24 16:09:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:09:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:09:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:09:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-24 16:09:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-24 16:09:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:09:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:09:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:09:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:09:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:09:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:09:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:09:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:09:23,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:09:23,127 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 16:09:23,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:09:23 BoogieIcfgContainer [2020-09-24 16:09:23,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:09:23,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:09:23,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:09:23,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:09:23,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:09:22" (1/3) ... [2020-09-24 16:09:23,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436bd4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:09:23, skipping insertion in model container [2020-09-24 16:09:23,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:22" (2/3) ... [2020-09-24 16:09:23,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436bd4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:09:23, skipping insertion in model container [2020-09-24 16:09:23,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:09:23" (3/3) ... [2020-09-24 16:09:23,144 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-24 16:09:23,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:09:23,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:09:23,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:09:23,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:09:23,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:09:23,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:09:23,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:09:23,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:09:23,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:09:23,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:09:23,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:09:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-24 16:09:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:09:23,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:23,256 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] [2020-09-24 16:09:23,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-24 16:09:23,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:23,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359744679] [2020-09-24 16:09:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:23,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:23,419 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:23,419 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:23,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:23,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:09:23,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:09:23,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:09:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:23,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:23,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:23,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:23,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:23,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:23,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359744679] [2020-09-24 16:09:23,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:23,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:09:23,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352817294] [2020-09-24 16:09:23,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:09:23,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:23,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:09:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:09:23,550 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-09-24 16:09:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:23,844 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2020-09-24 16:09:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:09:23,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 16:09:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:23,862 INFO L225 Difference]: With dead ends: 245 [2020-09-24 16:09:23,863 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 16:09:23,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:09:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 16:09:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-24 16:09:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 16:09:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-09-24 16:09:23,938 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 23 [2020-09-24 16:09:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:23,939 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-09-24 16:09:23,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:09:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-09-24 16:09:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:09:23,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:23,942 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] [2020-09-24 16:09:23,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:09:23,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash -119454780, now seen corresponding path program 1 times [2020-09-24 16:09:23,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:23,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970405879] [2020-09-24 16:09:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:23,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:23,988 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:23,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:23,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:23,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:09:23,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:09:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:09:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:09:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:24,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:24,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:24,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:24,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970405879] [2020-09-24 16:09:24,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:24,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:09:24,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086095202] [2020-09-24 16:09:24,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:09:24,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:09:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:09:24,050 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2020-09-24 16:09:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:24,446 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2020-09-24 16:09:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:09:24,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-24 16:09:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:24,451 INFO L225 Difference]: With dead ends: 303 [2020-09-24 16:09:24,451 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 16:09:24,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:09:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 16:09:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 124. [2020-09-24 16:09:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 16:09:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-09-24 16:09:24,483 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 23 [2020-09-24 16:09:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:24,484 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-09-24 16:09:24,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:09:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-09-24 16:09:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 16:09:24,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:24,485 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] [2020-09-24 16:09:24,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:09:24,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:24,487 INFO L82 PathProgramCache]: Analyzing trace with hash -395870253, now seen corresponding path program 1 times [2020-09-24 16:09:24,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:24,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660386317] [2020-09-24 16:09:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:24,528 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:24,528 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:24,529 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 16:09:24,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:09:24,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:09:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:09:24,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:24,590 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:24,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:24,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:24,591 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:24,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:24,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:24,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:24,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660386317] [2020-09-24 16:09:24,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:24,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 16:09:24,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018441350] [2020-09-24 16:09:24,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:09:24,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:24,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:09:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:09:24,603 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 6 states. [2020-09-24 16:09:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:24,988 INFO L93 Difference]: Finished difference Result 310 states and 349 transitions. [2020-09-24 16:09:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:09:24,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-24 16:09:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:24,992 INFO L225 Difference]: With dead ends: 310 [2020-09-24 16:09:24,992 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 16:09:24,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:09:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 16:09:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 131. [2020-09-24 16:09:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 16:09:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-09-24 16:09:25,010 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 30 [2020-09-24 16:09:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:25,010 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-09-24 16:09:25,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:09:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-09-24 16:09:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:09:25,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:25,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:09:25,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:09:25,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1926718692, now seen corresponding path program 2 times [2020-09-24 16:09:25,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:25,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368054171] [2020-09-24 16:09:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:25,088 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:25,088 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:25,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:25,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 16:09:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:09:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:09:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:09:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:09:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:25,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:25,191 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:25,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:25,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:25,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:25,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:25,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368054171] [2020-09-24 16:09:25,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:25,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:09:25,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424956443] [2020-09-24 16:09:25,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:09:25,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:25,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:09:25,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:09:25,204 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 8 states. [2020-09-24 16:09:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:25,704 INFO L93 Difference]: Finished difference Result 317 states and 356 transitions. [2020-09-24 16:09:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:09:25,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-09-24 16:09:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:25,707 INFO L225 Difference]: With dead ends: 317 [2020-09-24 16:09:25,707 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 16:09:25,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:09:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 16:09:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 138. [2020-09-24 16:09:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-24 16:09:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2020-09-24 16:09:25,739 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 37 [2020-09-24 16:09:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:25,740 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2020-09-24 16:09:25,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:09:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2020-09-24 16:09:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:09:25,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:25,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:25,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:09:25,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:25,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1889524403, now seen corresponding path program 3 times [2020-09-24 16:09:25,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:25,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003370209] [2020-09-24 16:09:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:25,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:25,798 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:25,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:25,799 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:09:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:09:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:09:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:09:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 16:09:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:25,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:25,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:25,848 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:25,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:25,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:25,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:25,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 16:09:25,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003370209] [2020-09-24 16:09:25,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:25,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:09:25,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011803508] [2020-09-24 16:09:25,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:09:25,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:25,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:09:25,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:09:25,859 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 5 states. [2020-09-24 16:09:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:26,141 INFO L93 Difference]: Finished difference Result 249 states and 277 transitions. [2020-09-24 16:09:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:09:26,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-09-24 16:09:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:26,144 INFO L225 Difference]: With dead ends: 249 [2020-09-24 16:09:26,144 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 16:09:26,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:09:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 16:09:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2020-09-24 16:09:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 16:09:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-09-24 16:09:26,155 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 44 [2020-09-24 16:09:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:26,155 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-09-24 16:09:26,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:09:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-09-24 16:09:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 16:09:26,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:26,159 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:26,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:09:26,159 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:26,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1581132658, now seen corresponding path program 1 times [2020-09-24 16:09:26,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:26,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751487042] [2020-09-24 16:09:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 16:09:26,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:09:26,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:09:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:09:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 16:09:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,345 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:09:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:26,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:09:26,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:26,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751487042] [2020-09-24 16:09:26,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:26,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:09:26,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505100623] [2020-09-24 16:09:26,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:09:26,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:26,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:09:26,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:09:26,402 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 11 states. [2020-09-24 16:09:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:26,883 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2020-09-24 16:09:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:09:26,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 16:09:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:26,885 INFO L225 Difference]: With dead ends: 298 [2020-09-24 16:09:26,885 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 16:09:26,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:09:26,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 16:09:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2020-09-24 16:09:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 16:09:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-09-24 16:09:26,896 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 80 [2020-09-24 16:09:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:26,897 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-09-24 16:09:26,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:09:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-09-24 16:09:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 16:09:26,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:26,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:26,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:09:26,911 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:26,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2142538913, now seen corresponding path program 2 times [2020-09-24 16:09:26,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:26,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323620240] [2020-09-24 16:09:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,018 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,018 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,018 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:09:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 16:09:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:09:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 16:09:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,174 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,175 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,175 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 16:09:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,190 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 16:09:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:27,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323620240] [2020-09-24 16:09:27,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:27,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:09:27,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630725626] [2020-09-24 16:09:27,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:09:27,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:27,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:09:27,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:09:27,231 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 13 states. [2020-09-24 16:09:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:27,820 INFO L93 Difference]: Finished difference Result 305 states and 338 transitions. [2020-09-24 16:09:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 16:09:27,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-24 16:09:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:27,823 INFO L225 Difference]: With dead ends: 305 [2020-09-24 16:09:27,823 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 16:09:27,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:09:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 16:09:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 151. [2020-09-24 16:09:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 16:09:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2020-09-24 16:09:27,832 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 87 [2020-09-24 16:09:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:27,832 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2020-09-24 16:09:27,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:09:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2020-09-24 16:09:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 16:09:27,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:27,834 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:27,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:09:27,835 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1372997778, now seen corresponding path program 3 times [2020-09-24 16:09:27,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:27,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354638317] [2020-09-24 16:09:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,886 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,886 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,886 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:09:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:09:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,027 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:28,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 16:09:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,035 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,035 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,035 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:28,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:28,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:28,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 16:09:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,055 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:28,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:28,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:28,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354638317] [2020-09-24 16:09:28,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:28,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 16:09:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018264499] [2020-09-24 16:09:28,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:09:28,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:09:28,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:09:28,072 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand 15 states. [2020-09-24 16:09:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:28,884 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2020-09-24 16:09:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:09:28,884 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-24 16:09:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:28,886 INFO L225 Difference]: With dead ends: 312 [2020-09-24 16:09:28,886 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 16:09:28,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:09:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 16:09:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 158. [2020-09-24 16:09:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 16:09:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-09-24 16:09:28,902 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 94 [2020-09-24 16:09:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:28,902 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-09-24 16:09:28,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:09:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-09-24 16:09:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 16:09:28,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:28,904 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:28,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:09:28,904 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1331129217, now seen corresponding path program 4 times [2020-09-24 16:09:28,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:28,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945718092] [2020-09-24 16:09:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,959 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,959 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 16:09:28,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 16:09:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:29,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:29,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:29,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:29,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:29,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:29,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 16:09:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:29,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:29,123 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:29,123 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 16:09:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:29,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:29,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:29,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:29,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:29,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:29,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945718092] [2020-09-24 16:09:29,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:29,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 16:09:29,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958425065] [2020-09-24 16:09:29,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 16:09:29,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:29,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 16:09:29,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:09:29,157 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 17 states. [2020-09-24 16:09:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:29,989 INFO L93 Difference]: Finished difference Result 319 states and 352 transitions. [2020-09-24 16:09:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 16:09:29,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-09-24 16:09:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:29,991 INFO L225 Difference]: With dead ends: 319 [2020-09-24 16:09:29,991 INFO L226 Difference]: Without dead ends: 216 [2020-09-24 16:09:29,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-24 16:09:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-24 16:09:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 165. [2020-09-24 16:09:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 16:09:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2020-09-24 16:09:30,001 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 101 [2020-09-24 16:09:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:30,001 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2020-09-24 16:09:30,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 16:09:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2020-09-24 16:09:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 16:09:30,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:30,003 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:30,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:09:30,003 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:30,004 INFO L82 PathProgramCache]: Analyzing trace with hash -837086642, now seen corresponding path program 5 times [2020-09-24 16:09:30,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:30,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581288141] [2020-09-24 16:09:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,031 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,032 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,032 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 16:09:30,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:30,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:09:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 16:09:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:09:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:30,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 16:09:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,082 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,082 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:30,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:09:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,094 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,095 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-09-24 16:09:30,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581288141] [2020-09-24 16:09:30,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:30,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:09:30,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826135550] [2020-09-24 16:09:30,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:09:30,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:30,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:09:30,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:09:30,109 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand 5 states. [2020-09-24 16:09:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:30,376 INFO L93 Difference]: Finished difference Result 298 states and 327 transitions. [2020-09-24 16:09:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:09:30,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-24 16:09:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:30,380 INFO L225 Difference]: With dead ends: 298 [2020-09-24 16:09:30,380 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 16:09:30,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:09:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 16:09:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 166. [2020-09-24 16:09:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-24 16:09:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2020-09-24 16:09:30,390 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 108 [2020-09-24 16:09:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:30,391 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2020-09-24 16:09:30,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:09:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2020-09-24 16:09:30,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 16:09:30,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:30,393 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:30,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:09:30,393 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:30,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:30,393 INFO L82 PathProgramCache]: Analyzing trace with hash -118705538, now seen corresponding path program 1 times [2020-09-24 16:09:30,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:30,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939972403] [2020-09-24 16:09:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 16:09:30,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:09:30,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:09:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 16:09:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:09:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,477 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 16:09:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:30,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-24 16:09:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-09-24 16:09:30,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939972403] [2020-09-24 16:09:30,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:30,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:09:30,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488036849] [2020-09-24 16:09:30,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:09:30,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:09:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:09:30,518 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand 7 states. [2020-09-24 16:09:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:30,818 INFO L93 Difference]: Finished difference Result 305 states and 334 transitions. [2020-09-24 16:09:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:09:30,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-09-24 16:09:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:30,821 INFO L225 Difference]: With dead ends: 305 [2020-09-24 16:09:30,821 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 16:09:30,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:09:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 16:09:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 173. [2020-09-24 16:09:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-09-24 16:09:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 185 transitions. [2020-09-24 16:09:30,834 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 185 transitions. Word has length 115 [2020-09-24 16:09:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:30,834 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 185 transitions. [2020-09-24 16:09:30,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:09:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 185 transitions. [2020-09-24 16:09:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 16:09:30,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:30,836 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:30,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:09:30,837 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1732213838, now seen corresponding path program 2 times [2020-09-24 16:09:30,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:30,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520559590] [2020-09-24 16:09:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:30,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:30,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:30,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 16:09:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 16:09:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:09:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 16:09:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:31,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:31,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:31,137 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:31,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:31,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:31,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 16:09:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:31,143 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:31,144 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:31,144 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 16:09:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:31,169 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:31,169 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:31,169 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:31,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:31,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:31,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:31,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:31,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520559590] [2020-09-24 16:09:31,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:31,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 16:09:31,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925332363] [2020-09-24 16:09:31,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 16:09:31,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 16:09:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:09:31,193 INFO L87 Difference]: Start difference. First operand 173 states and 185 transitions. Second operand 19 states. [2020-09-24 16:09:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:32,269 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2020-09-24 16:09:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 16:09:32,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-09-24 16:09:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:32,272 INFO L225 Difference]: With dead ends: 342 [2020-09-24 16:09:32,272 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 16:09:32,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 16:09:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 16:09:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 180. [2020-09-24 16:09:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-24 16:09:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2020-09-24 16:09:32,288 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 122 [2020-09-24 16:09:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:32,288 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2020-09-24 16:09:32,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 16:09:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2020-09-24 16:09:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 16:09:32,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:32,292 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:32,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:09:32,292 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:32,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1756428833, now seen corresponding path program 3 times [2020-09-24 16:09:32,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:32,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630082035] [2020-09-24 16:09:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:32,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:32,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:32,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:32,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 16:09:32,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 16:09:32,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:09:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 16:09:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:32,767 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:32,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:32,768 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:32,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:32,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:32,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 16:09:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:32,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:32,779 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:32,779 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 16:09:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:32,809 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:32,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:32,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:32,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630082035] [2020-09-24 16:09:32,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:32,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 16:09:32,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902431445] [2020-09-24 16:09:32,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 16:09:32,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 16:09:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:09:32,838 INFO L87 Difference]: Start difference. First operand 180 states and 192 transitions. Second operand 21 states. [2020-09-24 16:09:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:33,804 INFO L93 Difference]: Finished difference Result 349 states and 382 transitions. [2020-09-24 16:09:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 16:09:33,805 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2020-09-24 16:09:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:33,806 INFO L225 Difference]: With dead ends: 349 [2020-09-24 16:09:33,807 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 16:09:33,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 16:09:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 16:09:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 187. [2020-09-24 16:09:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-24 16:09:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2020-09-24 16:09:33,827 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 129 [2020-09-24 16:09:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:33,828 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2020-09-24 16:09:33,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 16:09:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2020-09-24 16:09:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 16:09:33,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:33,830 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:33,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:09:33,830 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1609418542, now seen corresponding path program 4 times [2020-09-24 16:09:33,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:33,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081642852] [2020-09-24 16:09:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:33,928 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:33,928 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:33,928 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 16:09:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 16:09:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:34,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:34,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:34,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:09:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:34,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:34,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:34,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:34,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:34,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:34,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 16:09:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:34,293 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:34,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:34,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:34,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:34,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081642852] [2020-09-24 16:09:34,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:34,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 16:09:34,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289889859] [2020-09-24 16:09:34,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 16:09:34,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 16:09:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:09:34,329 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 23 states. [2020-09-24 16:09:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:35,573 INFO L93 Difference]: Finished difference Result 356 states and 389 transitions. [2020-09-24 16:09:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 16:09:35,573 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-09-24 16:09:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:35,575 INFO L225 Difference]: With dead ends: 356 [2020-09-24 16:09:35,575 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 16:09:35,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1287, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 16:09:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 16:09:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 194. [2020-09-24 16:09:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-24 16:09:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2020-09-24 16:09:35,588 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 136 [2020-09-24 16:09:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:35,588 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2020-09-24 16:09:35,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 16:09:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2020-09-24 16:09:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 16:09:35,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:35,590 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:35,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:09:35,591 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:35,591 INFO L82 PathProgramCache]: Analyzing trace with hash 450936575, now seen corresponding path program 5 times [2020-09-24 16:09:35,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:35,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773370975] [2020-09-24 16:09:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:35,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:35,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:35,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 16:09:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 16:09:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:36,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:36,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 16:09:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:36,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:36,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:36,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:09:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:36,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:36,083 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:36,083 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:36,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773370975] [2020-09-24 16:09:36,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:36,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 16:09:36,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527332707] [2020-09-24 16:09:36,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 16:09:36,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:36,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 16:09:36,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-24 16:09:36,105 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand 25 states. [2020-09-24 16:09:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:37,366 INFO L93 Difference]: Finished difference Result 363 states and 396 transitions. [2020-09-24 16:09:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 16:09:37,367 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 143 [2020-09-24 16:09:37,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:37,368 INFO L225 Difference]: With dead ends: 363 [2020-09-24 16:09:37,369 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 16:09:37,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=625, Invalid=1537, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 16:09:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 16:09:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 201. [2020-09-24 16:09:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-24 16:09:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2020-09-24 16:09:37,382 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 143 [2020-09-24 16:09:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:37,383 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 213 transitions. [2020-09-24 16:09:37,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 16:09:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 213 transitions. [2020-09-24 16:09:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 16:09:37,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:37,385 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:37,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:09:37,385 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1664120306, now seen corresponding path program 6 times [2020-09-24 16:09:37,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:37,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425103588] [2020-09-24 16:09:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:37,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:37,513 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:37,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 16:09:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 16:09:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 16:09:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 16:09:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:37,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:37,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:37,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 16:09:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:37,926 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:37,926 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:37,927 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:37,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:37,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:37,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:37,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 16:09:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:37,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:37,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:37,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:37,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:37,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:37,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425103588] [2020-09-24 16:09:37,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:37,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 16:09:37,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897992498] [2020-09-24 16:09:37,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 16:09:37,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 16:09:37,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:09:37,977 INFO L87 Difference]: Start difference. First operand 201 states and 213 transitions. Second operand 27 states. [2020-09-24 16:09:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:39,269 INFO L93 Difference]: Finished difference Result 370 states and 403 transitions. [2020-09-24 16:09:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 16:09:39,270 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 150 [2020-09-24 16:09:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:39,272 INFO L225 Difference]: With dead ends: 370 [2020-09-24 16:09:39,272 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 16:09:39,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=1809, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 16:09:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 16:09:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 208. [2020-09-24 16:09:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 16:09:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 220 transitions. [2020-09-24 16:09:39,283 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 220 transitions. Word has length 150 [2020-09-24 16:09:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:39,283 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 220 transitions. [2020-09-24 16:09:39,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 16:09:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 220 transitions. [2020-09-24 16:09:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 16:09:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:39,285 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:39,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:09:39,286 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1474822175, now seen corresponding path program 7 times [2020-09-24 16:09:39,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:39,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950101071] [2020-09-24 16:09:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:39,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:39,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:39,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:39,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:39,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 16:09:39,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 16:09:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:39,866 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:39,866 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:39,866 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:39,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:09:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:39,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:39,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:39,873 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 16:09:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:39,898 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:39,898 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:39,899 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:39,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:39,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:39,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:39,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:39,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950101071] [2020-09-24 16:09:39,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:39,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 16:09:39,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409244478] [2020-09-24 16:09:39,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 16:09:39,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:39,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 16:09:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-24 16:09:39,926 INFO L87 Difference]: Start difference. First operand 208 states and 220 transitions. Second operand 29 states. [2020-09-24 16:09:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:41,659 INFO L93 Difference]: Finished difference Result 377 states and 410 transitions. [2020-09-24 16:09:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 16:09:41,660 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 157 [2020-09-24 16:09:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:41,662 INFO L225 Difference]: With dead ends: 377 [2020-09-24 16:09:41,662 INFO L226 Difference]: Without dead ends: 266 [2020-09-24 16:09:41,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=867, Invalid=2103, Unknown=0, NotChecked=0, Total=2970 [2020-09-24 16:09:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-24 16:09:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 215. [2020-09-24 16:09:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 16:09:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 227 transitions. [2020-09-24 16:09:41,674 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 227 transitions. Word has length 157 [2020-09-24 16:09:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:41,675 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 227 transitions. [2020-09-24 16:09:41,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 16:09:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 227 transitions. [2020-09-24 16:09:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 16:09:41,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:41,677 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:41,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:09:41,677 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash 577946862, now seen corresponding path program 8 times [2020-09-24 16:09:41,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:41,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532854810] [2020-09-24 16:09:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:41,868 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:41,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:41,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 16:09:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 16:09:41,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 16:09:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 16:09:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:42,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:42,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:42,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 16:09:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:42,368 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:42,369 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:42,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:42,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:42,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:42,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 16:09:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:42,399 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:42,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:42,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:42,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:42,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532854810] [2020-09-24 16:09:42,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 16:09:42,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455402988] [2020-09-24 16:09:42,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 16:09:42,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 16:09:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-24 16:09:42,425 INFO L87 Difference]: Start difference. First operand 215 states and 227 transitions. Second operand 31 states. [2020-09-24 16:09:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:44,362 INFO L93 Difference]: Finished difference Result 384 states and 417 transitions. [2020-09-24 16:09:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-24 16:09:44,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 164 [2020-09-24 16:09:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:44,365 INFO L225 Difference]: With dead ends: 384 [2020-09-24 16:09:44,365 INFO L226 Difference]: Without dead ends: 273 [2020-09-24 16:09:44,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1003, Invalid=2419, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 16:09:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-24 16:09:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2020-09-24 16:09:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 16:09:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 234 transitions. [2020-09-24 16:09:44,376 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 234 transitions. Word has length 164 [2020-09-24 16:09:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:44,376 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 234 transitions. [2020-09-24 16:09:44,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 16:09:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 234 transitions. [2020-09-24 16:09:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 16:09:44,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:44,379 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:44,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:09:44,379 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:44,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1374238401, now seen corresponding path program 9 times [2020-09-24 16:09:44,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:44,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774445120] [2020-09-24 16:09:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:44,545 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 16:09:44,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 16:09:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 16:09:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:45,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:45,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:45,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:45,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:45,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:45,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:45,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:45,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 16:09:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:45,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:45,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:45,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:45,082 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:45,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:45,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:45,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 16:09:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:45,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:45,122 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:45,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:45,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774445120] [2020-09-24 16:09:45,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:45,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-24 16:09:45,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556942590] [2020-09-24 16:09:45,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-24 16:09:45,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-24 16:09:45,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 16:09:45,151 INFO L87 Difference]: Start difference. First operand 222 states and 234 transitions. Second operand 33 states. [2020-09-24 16:09:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:47,203 INFO L93 Difference]: Finished difference Result 391 states and 424 transitions. [2020-09-24 16:09:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-24 16:09:47,204 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 171 [2020-09-24 16:09:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:47,207 INFO L225 Difference]: With dead ends: 391 [2020-09-24 16:09:47,207 INFO L226 Difference]: Without dead ends: 280 [2020-09-24 16:09:47,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1149, Invalid=2757, Unknown=0, NotChecked=0, Total=3906 [2020-09-24 16:09:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-24 16:09:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 229. [2020-09-24 16:09:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 16:09:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 241 transitions. [2020-09-24 16:09:47,217 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 241 transitions. Word has length 171 [2020-09-24 16:09:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:47,218 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 241 transitions. [2020-09-24 16:09:47,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-24 16:09:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 241 transitions. [2020-09-24 16:09:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 16:09:47,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:47,219 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:47,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:09:47,220 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash -454723634, now seen corresponding path program 10 times [2020-09-24 16:09:47,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:47,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581193895] [2020-09-24 16:09:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:47,388 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:47,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:47,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:47,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 16:09:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 16:09:47,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 16:09:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 16:09:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:47,951 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:47,951 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:47,951 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:09:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:47,957 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:47,957 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:47,958 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:47,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:47,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:47,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:47,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 16:09:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:47,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:47,988 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:47,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:48,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581193895] [2020-09-24 16:09:48,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:48,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-24 16:09:48,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093195510] [2020-09-24 16:09:48,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-24 16:09:48,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-24 16:09:48,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 16:09:48,020 INFO L87 Difference]: Start difference. First operand 229 states and 241 transitions. Second operand 35 states. [2020-09-24 16:09:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:49,837 INFO L93 Difference]: Finished difference Result 398 states and 431 transitions. [2020-09-24 16:09:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-24 16:09:49,838 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 178 [2020-09-24 16:09:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:49,839 INFO L225 Difference]: With dead ends: 398 [2020-09-24 16:09:49,840 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 16:09:49,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1305, Invalid=3117, Unknown=0, NotChecked=0, Total=4422 [2020-09-24 16:09:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 16:09:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 236. [2020-09-24 16:09:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-24 16:09:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 248 transitions. [2020-09-24 16:09:49,850 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 248 transitions. Word has length 178 [2020-09-24 16:09:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:49,850 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 248 transitions. [2020-09-24 16:09:49,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-24 16:09:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 248 transitions. [2020-09-24 16:09:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 16:09:49,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:49,852 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:49,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 16:09:49,852 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash 496966239, now seen corresponding path program 11 times [2020-09-24 16:09:49,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:49,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69439602] [2020-09-24 16:09:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:50,098 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:50,099 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:50,099 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:50,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:50,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 16:09:50,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 16:09:50,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 16:09:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:09:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 16:09:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:50,797 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:50,797 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:50,797 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 16:09:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:50,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:09:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 16:09:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:50,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:50,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:50,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69439602] [2020-09-24 16:09:50,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:50,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-24 16:09:50,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184735179] [2020-09-24 16:09:50,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-24 16:09:50,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-24 16:09:50,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 16:09:50,868 INFO L87 Difference]: Start difference. First operand 236 states and 248 transitions. Second operand 37 states. [2020-09-24 16:09:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:53,346 INFO L93 Difference]: Finished difference Result 405 states and 438 transitions. [2020-09-24 16:09:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-24 16:09:53,346 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 185 [2020-09-24 16:09:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:53,348 INFO L225 Difference]: With dead ends: 405 [2020-09-24 16:09:53,348 INFO L226 Difference]: Without dead ends: 294 [2020-09-24 16:09:53,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1471, Invalid=3499, Unknown=0, NotChecked=0, Total=4970 [2020-09-24 16:09:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-24 16:09:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2020-09-24 16:09:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-24 16:09:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 255 transitions. [2020-09-24 16:09:53,359 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 255 transitions. Word has length 185 [2020-09-24 16:09:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:53,359 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 255 transitions. [2020-09-24 16:09:53,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-24 16:09:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 255 transitions. [2020-09-24 16:09:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 16:09:53,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:53,361 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:53,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 16:09:53,361 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1481268562, now seen corresponding path program 12 times [2020-09-24 16:09:53,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:53,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651358085] [2020-09-24 16:09:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:09:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:09:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 16:09:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:09:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,461 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,461 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,461 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 16:09:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,470 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,470 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,470 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:09:53,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:09:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:09:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 16:09:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,493 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:53,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:53,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-09-24 16:09:53,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651358085] [2020-09-24 16:09:53,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:53,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:09:53,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148231879] [2020-09-24 16:09:53,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:09:53,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:09:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:09:53,519 INFO L87 Difference]: Start difference. First operand 243 states and 255 transitions. Second operand 6 states. [2020-09-24 16:09:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:53,778 INFO L93 Difference]: Finished difference Result 327 states and 350 transitions. [2020-09-24 16:09:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:09:53,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-09-24 16:09:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:53,782 INFO L225 Difference]: With dead ends: 327 [2020-09-24 16:09:53,783 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 16:09:53,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:09:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 16:09:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-09-24 16:09:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-24 16:09:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 262 transitions. [2020-09-24 16:09:53,795 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 262 transitions. Word has length 192 [2020-09-24 16:09:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:53,795 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 262 transitions. [2020-09-24 16:09:53,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:09:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 262 transitions. [2020-09-24 16:09:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 16:09:53,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:53,799 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:09:53,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 16:09:53,799 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:53,800 INFO L82 PathProgramCache]: Analyzing trace with hash 471722044, now seen corresponding path program 1 times [2020-09-24 16:09:53,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:53,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187126810] [2020-09-24 16:09:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,863 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 16:09:53,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:09:53,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:09:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:09:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-24 16:09:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,937 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:09:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:09:53,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 16:09:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,952 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,952 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:09:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:09:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 16:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:09:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 16:09:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:53,989 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:53,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:09:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-09-24 16:09:54,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187126810] [2020-09-24 16:09:54,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:54,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:09:54,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868115116] [2020-09-24 16:09:54,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:09:54,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:54,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:09:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:09:54,039 INFO L87 Difference]: Start difference. First operand 249 states and 262 transitions. Second operand 8 states. [2020-09-24 16:09:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:54,275 INFO L93 Difference]: Finished difference Result 293 states and 310 transitions. [2020-09-24 16:09:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:09:54,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-09-24 16:09:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:54,276 INFO L225 Difference]: With dead ends: 293 [2020-09-24 16:09:54,276 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:09:54,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:09:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:09:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:09:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:09:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:09:54,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 195 [2020-09-24 16:09:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:54,278 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:09:54,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:09:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:09:54,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:09:54,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-24 16:09:54,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:09:54,607 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-24 16:09:54,608 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 16:09:54,608 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-24 16:09:54,608 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-24 16:09:54,608 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-24 16:09:54,608 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-24 16:09:54,609 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-24 16:09:54,609 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-24 16:09:54,609 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2020-09-24 16:09:54,610 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-24 16:09:54,610 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-24 16:09:54,610 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 16:09:54,610 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 16:09:54,610 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 16:09:54,611 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,612 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 16:09:54,613 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,613 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-24 16:09:54,613 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-24 16:09:54,614 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 16:09:54,614 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-24 16:09:54,614 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 16:09:54,614 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-24 16:09:54,614 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-24 16:09:54,615 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,615 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:09:54,616 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:09:54,616 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:09:54,616 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-24 16:09:54,616 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 16:09:54,616 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-24 16:09:54,617 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-24 16:09:54,617 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-24 16:09:54,617 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-24 16:09:54,618 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-24 16:09:54,618 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 16:09:54,618 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 16:09:54,618 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-24 16:09:54,619 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-24 16:09:54,619 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-24 16:09:54,620 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 16:09:54,620 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 16:09:54,620 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-24 16:09:54,620 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-24 16:09:54,620 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:09:54,620 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 16:09:54,621 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-24 16:09:54,621 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-24 16:09:54,621 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-24 16:09:54,621 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-24 16:09:54,622 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 16:09:54,622 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 16:09:54,623 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 16:09:54,624 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (<= main_~n~0 0) [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-24 16:09:54,625 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,626 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,627 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,627 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 16:09:54,627 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-24 16:09:54,629 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-24 16:09:54,629 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:09:54,630 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-24 16:09:54,631 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: false [2020-09-24 16:09:54,632 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-24 16:09:54,632 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-24 16:09:54,632 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-24 16:09:54,632 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-24 16:09:54,632 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-24 16:09:54,633 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-24 16:09:54,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:09:54 BoogieIcfgContainer [2020-09-24 16:09:54,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:09:54,667 INFO L168 Benchmark]: Toolchain (without parser) took 32619.17 ms. Allocated memory was 138.4 MB in the beginning and 546.8 MB in the end (delta: 408.4 MB). Free memory was 101.7 MB in the beginning and 484.2 MB in the end (delta: -382.6 MB). Peak memory consumption was 398.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,668 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.88 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 90.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,669 INFO L168 Benchmark]: Boogie Preprocessor took 131.68 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,670 INFO L168 Benchmark]: RCFGBuilder took 581.09 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 148.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,671 INFO L168 Benchmark]: TraceAbstraction took 31528.16 ms. Allocated memory was 200.8 MB in the beginning and 546.8 MB in the end (delta: 346.0 MB). Free memory was 147.9 MB in the beginning and 484.2 MB in the end (delta: -336.4 MB). Peak memory consumption was 382.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:54,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.88 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 90.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.68 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 581.09 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 148.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31528.16 ms. Allocated memory was 200.8 MB in the beginning and 546.8 MB in the end (delta: 346.0 MB). Free memory was 147.9 MB in the beginning and 484.2 MB in the end (delta: -336.4 MB). Peak memory consumption was 382.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (0 <= i && size == \old(size)) || (size == \old(size) && 1 <= \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.0s, OverallIterations: 23, TraceHistogramMax: 17, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2535 SDtfs, 3590 SDslu, 17829 SDs, 0 SdLazy, 16255 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 798 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 657 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5293 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 1028 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 174 PreInvPairs, 200 NumberOfFragments, 89 HoareAnnotationTreeSize, 174 FomulaSimplifications, 348 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 2664 NumberOfCodeBlocks, 2664 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2641 ConstructedInterpolants, 0 QuantifiedInterpolants, 753508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 2378/7275 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...