/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:03:21,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:03:21,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:03:21,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:03:21,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:03:21,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:03:21,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:03:21,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:03:21,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:03:21,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:03:21,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:03:21,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:03:21,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:03:21,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:03:21,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:03:21,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:03:21,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:03:21,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:03:21,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:03:21,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:03:21,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:03:21,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:03:21,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:03:21,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:03:21,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:03:21,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:03:21,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:03:21,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:03:21,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:03:21,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:03:21,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:03:21,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:03:21,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:03:21,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:03:21,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:03:21,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:03:21,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:03:21,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:03:21,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:03:21,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:03:21,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:03:21,977 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 [2020-09-24 20:03:22,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:03:22,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:03:22,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:03:22,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:03:22,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:03:22,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:03:22,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:03:22,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:03:22,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:03:22,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:03:22,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:03:22,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:03:22,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:03:22,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:03:22,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:03:22,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:03:22,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:03:22,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:03:22,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:03:22,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:03:22,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:03:22,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:03:22,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:03:22,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:03:22,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:03:22,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:03:22,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 20:03:22,038 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 20:03:22,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:03:22,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:03:22,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:03:22,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:03:22,515 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:03:22,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-24 20:03:22,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c062d9078/4cc6b21f4d874795a4730939a02d27ea/FLAG21480523d [2020-09-24 20:03:23,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:03:23,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-24 20:03:23,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c062d9078/4cc6b21f4d874795a4730939a02d27ea/FLAG21480523d [2020-09-24 20:03:24,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c062d9078/4cc6b21f4d874795a4730939a02d27ea [2020-09-24 20:03:24,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:03:24,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:03:24,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:03:24,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:03:24,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:03:24,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:03:24" (1/1) ... [2020-09-24 20:03:24,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6128a388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:24, skipping insertion in model container [2020-09-24 20:03:24,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:03:24" (1/1) ... [2020-09-24 20:03:24,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:03:24,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:03:25,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:03:25,991 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:03:26,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:03:26,361 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:03:26,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26 WrapperNode [2020-09-24 20:03:26,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:03:26,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:03:26,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:03:26,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:03:26,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... [2020-09-24 20:03:26,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:03:26,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:03:26,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:03:26,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:03:26,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:03:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:03:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:03:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-09-24 20:03:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-09-24 20:03:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-09-24 20:03:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-09-24 20:03:26,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-09-24 20:03:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-09-24 20:03:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-09-24 20:03:26,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-24 20:03:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-09-24 20:03:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-09-24 20:03:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-09-24 20:03:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-09-24 20:03:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-09-24 20:03:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-09-24 20:03:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-09-24 20:03:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:03:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-24 20:03:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-24 20:03:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-24 20:03:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-24 20:03:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-24 20:03:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-24 20:03:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-24 20:03:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-24 20:03:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-09-24 20:03:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-09-24 20:03:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-09-24 20:03:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-09-24 20:03:26,768 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-09-24 20:03:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-09-24 20:03:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-09-24 20:03:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-09-24 20:03:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-24 20:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-24 20:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-24 20:03:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-24 20:03:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 20:03:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-24 20:03:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-24 20:03:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-24 20:03:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-24 20:03:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-24 20:03:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 20:03:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-09-24 20:03:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-09-24 20:03:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-09-24 20:03:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-24 20:03:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-24 20:03:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-09-24 20:03:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-09-24 20:03:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-09-24 20:03:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-09-24 20:03:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-09-24 20:03:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-09-24 20:03:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-09-24 20:03:26,784 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-09-24 20:03:26,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-24 20:03:26,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-09-24 20:03:26,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-09-24 20:03:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-24 20:03:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-09-24 20:03:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-09-24 20:03:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-24 20:03:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-09-24 20:03:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-24 20:03:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-24 20:03:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-09-24 20:03:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-24 20:03:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 20:03:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-24 20:03:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 20:03:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-09-24 20:03:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-24 20:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-09-24 20:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-09-24 20:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-09-24 20:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-09-24 20:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-09-24 20:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-09-24 20:03:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-09-24 20:03:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-24 20:03:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-09-24 20:03:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-09-24 20:03:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-24 20:03:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:03:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-24 20:03:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-24 20:03:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-24 20:03:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-24 20:03:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-24 20:03:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-09-24 20:03:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-09-24 20:03:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-09-24 20:03:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:03:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-09-24 20:03:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-09-24 20:03:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-09-24 20:03:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:03:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-09-24 20:03:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-09-24 20:03:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-09-24 20:03:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-09-24 20:03:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-09-24 20:03:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-09-24 20:03:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-09-24 20:03:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-24 20:03:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:03:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:03:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:03:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 20:03:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:03:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:03:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-24 20:03:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:03:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-24 20:03:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 20:03:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-24 20:03:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-24 20:03:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-24 20:03:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-24 20:03:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-24 20:03:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-09-24 20:03:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-24 20:03:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-09-24 20:03:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-09-24 20:03:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-09-24 20:03:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-09-24 20:03:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-09-24 20:03:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-09-24 20:03:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-09-24 20:03:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-09-24 20:03:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-09-24 20:03:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-09-24 20:03:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-24 20:03:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-09-24 20:03:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-24 20:03:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-09-24 20:03:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-09-24 20:03:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-09-24 20:03:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-09-24 20:03:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-09-24 20:03:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-09-24 20:03:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-09-24 20:03:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-24 20:03:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-24 20:03:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-24 20:03:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-24 20:03:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-09-24 20:03:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-09-24 20:03:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-09-24 20:03:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-09-24 20:03:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-09-24 20:03:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:03:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-09-24 20:03:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-09-24 20:03:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-09-24 20:03:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-09-24 20:03:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:03:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-09-24 20:03:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-09-24 20:03:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-24 20:03:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-24 20:03:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 20:03:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 20:03:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:03:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-24 20:03:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-24 20:03:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-24 20:03:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-24 20:03:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-24 20:03:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-24 20:03:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-24 20:03:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-24 20:03:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-24 20:03:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-24 20:03:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-24 20:03:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-24 20:03:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-24 20:03:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-24 20:03:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-24 20:03:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 20:03:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:03:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 20:03:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:03:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 20:03:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:03:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-24 20:03:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:03:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-24 20:03:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-24 20:03:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-24 20:03:27,588 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-24 20:03:29,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:03:29,207 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 20:03:29,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:03:29 BoogieIcfgContainer [2020-09-24 20:03:29,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:03:29,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:03:29,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:03:29,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:03:29,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:03:24" (1/3) ... [2020-09-24 20:03:29,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:03:29, skipping insertion in model container [2020-09-24 20:03:29,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:03:26" (2/3) ... [2020-09-24 20:03:29,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:03:29, skipping insertion in model container [2020-09-24 20:03:29,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:03:29" (3/3) ... [2020-09-24 20:03:29,229 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-24 20:03:29,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:03:29,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:03:29,274 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:03:29,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:03:29,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:03:29,310 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:03:29,310 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:03:29,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:03:29,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:03:29,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:03:29,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:03:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states. [2020-09-24 20:03:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 20:03:29,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:03:29,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:03:29,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:03:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:03:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash -410682460, now seen corresponding path program 1 times [2020-09-24 20:03:29,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:03:29,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911020407] [2020-09-24 20:03:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:03:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:31,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:31,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 20:03:31,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:03:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-09-24 20:03:31,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:03:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-09-24 20:03:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:03:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:03:31,760 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 20:03:31,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 20:03:32,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 20:03:32,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:03:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:03:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 20:03:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 20:03:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:03:32,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:03:32,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 20:03:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 20:03:32,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:03:32,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:03:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:03:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 20:03:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:03:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:03:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:03:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-24 20:03:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:03:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:03:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:03:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:03:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:03:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-24 20:03:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:03:32,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:03:32,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:03:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 20:03:32,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:03:32,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:03:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:03:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 20:03:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-09-24 20:03:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:32,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:32,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:03:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:03:32,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:03:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:03:33,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911020407] [2020-09-24 20:03:33,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:03:33,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:03:33,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476850502] [2020-09-24 20:03:33,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:03:33,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:03:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:03:33,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:03:33,098 INFO L87 Difference]: Start difference. First operand 1198 states. Second operand 9 states. [2020-09-24 20:03:35,152 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 20:03:35,542 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 20:03:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:03:46,102 INFO L93 Difference]: Finished difference Result 2585 states and 3000 transitions. [2020-09-24 20:03:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:03:46,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-24 20:03:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:03:46,137 INFO L225 Difference]: With dead ends: 2585 [2020-09-24 20:03:46,138 INFO L226 Difference]: Without dead ends: 1559 [2020-09-24 20:03:46,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:03:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-09-24 20:03:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1125. [2020-09-24 20:03:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-09-24 20:03:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1230 transitions. [2020-09-24 20:03:46,369 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1230 transitions. Word has length 230 [2020-09-24 20:03:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:03:46,370 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1230 transitions. [2020-09-24 20:03:46,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:03:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1230 transitions. [2020-09-24 20:03:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 20:03:46,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:03:46,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:03:46,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:03:46,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:03:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:03:46,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1201488600, now seen corresponding path program 1 times [2020-09-24 20:03:46,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:03:46,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877575348] [2020-09-24 20:03:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:03:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:47,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-24 20:03:47,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:03:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 20:03:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:03:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-24 20:03:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:03:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:48,100 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 20:03:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 20:03:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:48,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 20:03:48,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:03:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:03:48,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:03:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 20:03:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:03:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:03:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 20:03:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 20:03:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:03:48,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:03:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:03:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 20:03:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:48,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:03:48,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:03:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 20:03:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 20:03:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:49,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:49,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:03:49,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:03:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 20:03:49,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-24 20:03:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:49,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:03:49,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:03:49,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:03:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:03:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:49,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 20:03:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:03:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:03:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:49,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:49,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:03:49,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:03:49,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:03:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:49,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:03:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 20:03:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:03:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:03:49,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:03:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:03:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:03:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:03:49,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:03:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:03:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:03:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:03:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:03:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 20:03:49,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877575348] [2020-09-24 20:03:49,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:03:49,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:03:49,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939766773] [2020-09-24 20:03:49,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:03:49,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:03:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:03:49,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:03:49,411 INFO L87 Difference]: Start difference. First operand 1125 states and 1230 transitions. Second operand 8 states. [2020-09-24 20:03:50,443 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 20:04:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:04:05,755 INFO L93 Difference]: Finished difference Result 2854 states and 3311 transitions. [2020-09-24 20:04:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:04:05,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-24 20:04:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:04:05,779 INFO L225 Difference]: With dead ends: 2854 [2020-09-24 20:04:05,780 INFO L226 Difference]: Without dead ends: 2827 [2020-09-24 20:04:05,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:04:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-09-24 20:04:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1995. [2020-09-24 20:04:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-24 20:04:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2197 transitions. [2020-09-24 20:04:05,996 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2197 transitions. Word has length 238 [2020-09-24 20:04:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:04:05,998 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2197 transitions. [2020-09-24 20:04:05,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:04:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2197 transitions. [2020-09-24 20:04:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-24 20:04:06,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:04:06,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:04:06,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:04:06,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:04:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:04:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1284376602, now seen corresponding path program 1 times [2020-09-24 20:04:06,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:04:06,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036479141] [2020-09-24 20:04:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:04:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-09-24 20:04:07,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:04:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 20:04:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:04:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-09-24 20:04:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:04:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:04:07,624 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 20:04:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:04:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 20:04:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 20:04:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:04:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:04:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:04:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 20:04:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:04:08,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:04:08,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:04:08,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 20:04:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 20:04:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:04:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:04:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:04:08,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:04:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 20:04:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:04:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:04:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 20:04:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:04:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 20:04:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:04:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 20:04:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:04:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:04:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:04:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:04:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-24 20:04:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:04:08,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:04:08,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 20:04:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:04:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:04:08,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 20:04:08,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:04:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:04:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:04:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 20:04:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:08,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:04:08,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:04:08,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:04:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:04:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:04:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:04:09,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:04:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-09-24 20:04:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:04:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:04:09,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 20:04:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:04:09,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:04:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:04:09,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 20:04:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:04:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:04:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:04:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:04:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 20:04:09,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036479141] [2020-09-24 20:04:09,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:04:09,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:04:09,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892128310] [2020-09-24 20:04:09,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:04:09,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:04:09,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:04:09,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:04:09,257 INFO L87 Difference]: Start difference. First operand 1995 states and 2197 transitions. Second operand 11 states. [2020-09-24 20:04:11,010 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 211