/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 19:27:35,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 19:27:35,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 19:27:35,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 19:27:35,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 19:27:35,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 19:27:35,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 19:27:35,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 19:27:35,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 19:27:35,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 19:27:35,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 19:27:35,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 19:27:35,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 19:27:35,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 19:27:35,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 19:27:35,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 19:27:35,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 19:27:35,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 19:27:35,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 19:27:35,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 19:27:35,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 19:27:35,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 19:27:35,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 19:27:35,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 19:27:35,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 19:27:35,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 19:27:35,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 19:27:35,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 19:27:35,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 19:27:35,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 19:27:35,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 19:27:35,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 19:27:35,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 19:27:35,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 19:27:35,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 19:27:35,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 19:27:35,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 19:27:35,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 19:27:35,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 19:27:35,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 19:27:35,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 19:27:35,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-10-13 19:27:35,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 19:27:35,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 19:27:35,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 19:27:35,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 19:27:35,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 19:27:35,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 19:27:35,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 19:27:35,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 19:27:35,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 19:27:35,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 19:27:35,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 19:27:35,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 19:27:35,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 19:27:35,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 19:27:35,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 19:27:35,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 19:27:35,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 19:27:35,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 19:27:35,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 19:27:35,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 19:27:35,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 19:27:35,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 19:27:35,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 19:27:35,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 19:27:35,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 19:27:35,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 19:27:35,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-13 19:27:35,474 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 19:27:35,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 19:27:35,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 19:27:35,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 19:27:35,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 19:27:35,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 19:27:35,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2020-10-13 19:27:35,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d705a5e/2e9b127086444f59b2383f577123dbe3/FLAGf7f673ab3 [2020-10-13 19:27:36,684 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 19:27:36,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2020-10-13 19:27:36,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d705a5e/2e9b127086444f59b2383f577123dbe3/FLAGf7f673ab3 [2020-10-13 19:27:37,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d705a5e/2e9b127086444f59b2383f577123dbe3 [2020-10-13 19:27:37,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 19:27:37,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 19:27:37,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 19:27:37,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 19:27:37,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 19:27:37,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:37" (1/1) ... [2020-10-13 19:27:37,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7293d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:37, skipping insertion in model container [2020-10-13 19:27:37,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:37" (1/1) ... [2020-10-13 19:27:37,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 19:27:37,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 19:27:38,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:27:38,634 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 19:27:38,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:27:38,906 INFO L208 MainTranslator]: Completed translation [2020-10-13 19:27:38,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38 WrapperNode [2020-10-13 19:27:38,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 19:27:38,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 19:27:38,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 19:27:38,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 19:27:38,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:38,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... [2020-10-13 19:27:39,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 19:27:39,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 19:27:39,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 19:27:39,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 19:27:39,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 19:27:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 19:27:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 19:27:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-13 19:27:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2020-10-13 19:27:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-10-13 19:27:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 19:27:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-13 19:27:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-13 19:27:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-13 19:27:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-13 19:27:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-13 19:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-13 19:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-13 19:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-13 19:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-10-13 19:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2020-10-13 19:27:39,273 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_init [2020-10-13 19:27:39,275 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_exit [2020-10-13 19:27:39,275 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2020-10-13 19:27:39,275 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2020-10-13 19:27:39,275 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2020-10-13 19:27:39,276 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2020-10-13 19:27:39,276 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2020-10-13 19:27:39,276 INFO L138 BoogieDeclarations]: Found implementation of procedure continue_tx [2020-10-13 19:27:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2020-10-13 19:27:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 19:27:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-10-13 19:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-10-13 19:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-10-13 19:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-10-13 19:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-10-13 19:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2020-10-13 19:27:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-10-13 19:27:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2020-10-13 19:27:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-10-13 19:27:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-13 19:27:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-13 19:27:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-13 19:27:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-10-13 19:27:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-13 19:27:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-10-13 19:27:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-10-13 19:27:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-10-13 19:27:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-10-13 19:27:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-10-13 19:27:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-13 19:27:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2020-10-13 19:27:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2020-10-13 19:27:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-13 19:27:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-10-13 19:27:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-10-13 19:27:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-10-13 19:27:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-13 19:27:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-13 19:27:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 19:27:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 19:27:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 19:27:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-13 19:27:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2020-10-13 19:27:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-10-13 19:27:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-10-13 19:27:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-10-13 19:27:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2020-10-13 19:27:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-10-13 19:27:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-10-13 19:27:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-10-13 19:27:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-10-13 19:27:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 19:27:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 19:27:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-10-13 19:27:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-10-13 19:27:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 19:27:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 19:27:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 19:27:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-13 19:27:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 19:27:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-13 19:27:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 19:27:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-13 19:27:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-13 19:27:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-13 19:27:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-13 19:27:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-13 19:27:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2020-10-13 19:27:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-10-13 19:27:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2020-10-13 19:27:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2020-10-13 19:27:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-10-13 19:27:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2020-10-13 19:27:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2020-10-13 19:27:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2020-10-13 19:27:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2020-10-13 19:27:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2020-10-13 19:27:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2020-10-13 19:27:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure continue_tx [2020-10-13 19:27:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_init [2020-10-13 19:27:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 19:27:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 19:27:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_exit [2020-10-13 19:27:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 19:27:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-13 19:27:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 19:27:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2020-10-13 19:27:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 19:27:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-13 19:27:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-13 19:27:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 19:27:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-13 19:27:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-10-13 19:27:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-13 19:27:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-10-13 19:27:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-10-13 19:27:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-10-13 19:27:39,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-13 19:27:39,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-13 19:27:39,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-13 19:27:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-13 19:27:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-10-13 19:27:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-10-13 19:27:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-10-13 19:27:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 19:27:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-13 19:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 19:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 19:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 19:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 19:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 19:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 19:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 19:27:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 19:27:40,307 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-13 19:27:54,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 19:27:54,870 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 19:27:54,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:27:54 BoogieIcfgContainer [2020-10-13 19:27:54,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 19:27:54,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 19:27:54,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 19:27:54,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 19:27:54,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:27:37" (1/3) ... [2020-10-13 19:27:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a8dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:27:54, skipping insertion in model container [2020-10-13 19:27:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:38" (2/3) ... [2020-10-13 19:27:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a8dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:27:54, skipping insertion in model container [2020-10-13 19:27:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:27:54" (3/3) ... [2020-10-13 19:27:54,886 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2020-10-13 19:27:54,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 19:27:54,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 19:27:54,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 19:27:54,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 19:27:54,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 19:27:54,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 19:27:54,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 19:27:54,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 19:27:54,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 19:27:54,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 19:27:54,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 19:27:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 19:27:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 19:27:54,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:27:54,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:27:54,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:27:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:27:54,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1994322516, now seen corresponding path program 1 times [2020-10-13 19:27:55,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:27:55,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659452663] [2020-10-13 19:27:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:27:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 19:27:58,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:27:58,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2636 [2020-10-13 19:27:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:27:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 19:27:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 19:27:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 19:27:58,594 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 19:27:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:27:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:27:58,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 19:27:58,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:27:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:27:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:27:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:27:58,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 19:27:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:27:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:27:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:27:58,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:27:58,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:27:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:27:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:27:58,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:27:58,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:27:58,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:27:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:27:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 19:27:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:27:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:27:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 19:27:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 19:27:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:27:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 19:27:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:27:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:27:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:27:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:27:58,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:27:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 19:27:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:27:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:27:58,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:27:58,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:27:58,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:27:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 19:27:58,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:27:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:27:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:27:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:27:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:27:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 19:27:59,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659452663] [2020-10-13 19:27:59,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:27:59,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 19:27:59,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907515867] [2020-10-13 19:27:59,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 19:27:59,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:27:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 19:27:59,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 19:27:59,037 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 8 states. [2020-10-13 19:27:59,446 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-13 19:28:00,469 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-13 19:28:00,895 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-13 19:28:34,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:28:34,682 INFO L93 Difference]: Finished difference Result 847 states and 1175 transitions. [2020-10-13 19:28:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 19:28:34,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-13 19:28:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:28:34,709 INFO L225 Difference]: With dead ends: 847 [2020-10-13 19:28:34,709 INFO L226 Difference]: Without dead ends: 452 [2020-10-13 19:28:34,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-13 19:28:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-13 19:28:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2020-10-13 19:28:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 19:28:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 499 transitions. [2020-10-13 19:28:34,849 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 499 transitions. Word has length 49 [2020-10-13 19:28:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:28:34,850 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 499 transitions. [2020-10-13 19:28:34,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 19:28:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 499 transitions. [2020-10-13 19:28:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 19:28:34,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:28:34,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:28:34,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 19:28:34,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:28:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:28:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1111211123, now seen corresponding path program 1 times [2020-10-13 19:28:34,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:28:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32606321] [2020-10-13 19:28:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:28:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:28:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 19:28:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:28:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,253 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 19:28:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:28:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:28:36,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 19:28:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:28:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:28:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:28:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:28:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:28:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:28:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:28:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:28:36,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:28:36,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:28:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:28:36,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:28:36,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 19:28:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:28:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:28:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:28:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:28:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:28:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:28:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:28:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:28:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:28:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 19:28:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:28:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:28:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:28:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:28:36,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:28:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:28:36,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:28:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:28:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:28:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:28:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:28:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:28:36,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32606321] [2020-10-13 19:28:36,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:28:36,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 19:28:36,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549021764] [2020-10-13 19:28:36,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 19:28:36,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:28:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 19:28:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 19:28:36,473 INFO L87 Difference]: Start difference. First operand 377 states and 499 transitions. Second operand 7 states. [2020-10-13 19:28:36,766 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-13 19:28:37,562 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-13 19:28:38,077 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-13 19:29:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:29:15,897 INFO L93 Difference]: Finished difference Result 576 states and 755 transitions. [2020-10-13 19:29:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 19:29:15,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-13 19:29:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:29:15,904 INFO L225 Difference]: With dead ends: 576 [2020-10-13 19:29:15,904 INFO L226 Difference]: Without dead ends: 557 [2020-10-13 19:29:15,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-13 19:29:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-13 19:29:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 471. [2020-10-13 19:29:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-13 19:29:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 623 transitions. [2020-10-13 19:29:15,991 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 623 transitions. Word has length 50 [2020-10-13 19:29:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:29:15,992 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 623 transitions. [2020-10-13 19:29:15,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 19:29:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 623 transitions. [2020-10-13 19:29:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 19:29:15,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:29:15,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:29:15,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 19:29:15,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:29:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:29:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash 523705454, now seen corresponding path program 1 times [2020-10-13 19:29:15,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:29:16,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065901426] [2020-10-13 19:29:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:29:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:17,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:17,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 19:29:17,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:29:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-10-13 19:29:17,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:29:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 19:29:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:29:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,334 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 19:29:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:29:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:29:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 19:29:18,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:29:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:29:18,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:29:18,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:29:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:29:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:29:18,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:29:18,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:29:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:29:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:29:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:29:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:29:18,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:29:18,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:29:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:29:18,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 19:29:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:29:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:29:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 19:29:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 19:29:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:29:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:29:18,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:29:18,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:29:18,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:29:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:29:18,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:29:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:29:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:29:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:29:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:29:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:29:18,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065901426] [2020-10-13 19:29:18,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:29:18,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 19:29:18,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665383295] [2020-10-13 19:29:18,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 19:29:18,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:29:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 19:29:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 19:29:18,640 INFO L87 Difference]: Start difference. First operand 471 states and 623 transitions. Second operand 10 states. [2020-10-13 19:29:19,044 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-13 19:29:20,276 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-13 19:29:20,795 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-13 19:30:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:30:03,430 INFO L93 Difference]: Finished difference Result 1035 states and 1364 transitions. [2020-10-13 19:30:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 19:30:03,431 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 19:30:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:30:03,436 INFO L225 Difference]: With dead ends: 1035 [2020-10-13 19:30:03,436 INFO L226 Difference]: Without dead ends: 597 [2020-10-13 19:30:03,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 19:30:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-13 19:30:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 511. [2020-10-13 19:30:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-13 19:30:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 664 transitions. [2020-10-13 19:30:03,510 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 664 transitions. Word has length 52 [2020-10-13 19:30:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:30:03,510 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 664 transitions. [2020-10-13 19:30:03,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 19:30:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 664 transitions. [2020-10-13 19:30:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 19:30:03,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:30:03,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:30:03,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 19:30:03,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:30:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:30:03,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1488971973, now seen corresponding path program 1 times [2020-10-13 19:30:03,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:30:03,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251248893] [2020-10-13 19:30:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:30:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:03,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 19:30:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-13 19:30:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 19:30:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 19:30:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 19:30:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:30:04,688 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 19:30:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:30:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:30:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 19:30:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:30:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:30:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:30:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:30:04,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:30:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:30:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:30:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:30:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:30:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:30:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:30:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:30:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:30:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:30:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 19:30:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:30:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:30:04,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 19:30:04,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:30:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:30:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:04,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:30:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 19:30:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:30:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:04,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 19:30:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 19:30:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 19:30:05,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 19:30:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:30:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:30:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:30:05,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:30:05,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:30:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:30:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:30:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 19:30:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:30:05,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:30:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:30:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:30:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 19:30:05,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 19:30:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:30:05,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 19:30:05,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:30:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 19:30:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:30:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:30:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:30:05,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:30:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:30:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:30:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:30:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 19:30:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:30:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:30:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:30:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:30:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:30:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 19:30:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:30:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:30:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:30:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:30:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:30:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 19:30:05,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251248893] [2020-10-13 19:30:05,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:30:05,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 19:30:05,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932073541] [2020-10-13 19:30:05,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 19:30:05,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:30:05,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 19:30:05,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 19:30:05,235 INFO L87 Difference]: Start difference. First operand 511 states and 664 transitions. Second operand 12 states. [2020-10-13 19:30:05,655 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-13 19:30:06,956 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-13 19:30:07,556 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-13 19:30:43,212 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2020-10-13 19:30:55,039 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 243 [2020-10-13 19:30:55,422 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-10-13 19:30:55,817 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-10-13 19:31:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:31:13,102 INFO L93 Difference]: Finished difference Result 829 states and 1071 transitions. [2020-10-13 19:31:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 19:31:13,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-13 19:31:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:31:13,109 INFO L225 Difference]: With dead ends: 829 [2020-10-13 19:31:13,110 INFO L226 Difference]: Without dead ends: 810 [2020-10-13 19:31:13,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2020-10-13 19:31:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-10-13 19:31:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 701. [2020-10-13 19:31:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-13 19:31:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 914 transitions. [2020-10-13 19:31:13,207 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 914 transitions. Word has length 82 [2020-10-13 19:31:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:31:13,208 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 914 transitions. [2020-10-13 19:31:13,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 19:31:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 914 transitions. [2020-10-13 19:31:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 19:31:13,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:31:13,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:31:13,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 19:31:13,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:31:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:31:13,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1675704609, now seen corresponding path program 1 times [2020-10-13 19:31:13,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:31:13,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436603281] [2020-10-13 19:31:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:31:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:15,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 19:31:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:31:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-10-13 19:31:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:31:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 19:31:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 19:31:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,070 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 19:31:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:31:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:31:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 19:31:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:31:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:31:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:31:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:31:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:31:16,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:31:16,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:31:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:31:16,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:31:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:31:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:31:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 19:31:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:31:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:31:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 19:31:16,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 19:31:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 19:31:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 19:31:16,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:31:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:31:16,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:31:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 19:31:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:31:16,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:31:16,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 19:31:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 19:31:16,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 19:31:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:31:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:31:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 19:31:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:31:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:31:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:31:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:31:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 19:31:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:31:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:31:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:31:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:31:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:31:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:31:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:31:16,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:31:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:31:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 19:31:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:31:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:31:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:31:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:31:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:31:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:31:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:31:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:31:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:31:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:31:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:31:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 19:31:16,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436603281] [2020-10-13 19:31:16,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:31:16,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 19:31:16,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10428603] [2020-10-13 19:31:16,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 19:31:16,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:31:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 19:31:16,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 19:31:16,665 INFO L87 Difference]: Start difference. First operand 701 states and 914 transitions. Second operand 10 states. [2020-10-13 19:31:17,007 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 238