/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 --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-eb0fd7c [2020-09-21 13:06:53,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 13:06:53,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 13:06:53,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 13:06:53,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 13:06:53,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 13:06:53,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 13:06:53,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 13:06:53,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 13:06:53,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 13:06:53,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 13:06:53,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 13:06:53,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 13:06:53,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 13:06:53,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 13:06:53,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 13:06:53,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 13:06:53,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 13:06:53,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 13:06:53,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 13:06:53,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 13:06:53,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 13:06:53,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 13:06:53,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 13:06:53,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 13:06:53,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 13:06:53,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 13:06:53,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 13:06:53,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 13:06:53,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 13:06:53,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 13:06:53,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 13:06:53,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 13:06:53,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 13:06:53,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 13:06:53,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 13:06:53,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 13:06:53,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 13:06:53,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 13:06:53,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 13:06:53,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 13:06:53,977 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 [2020-09-21 13:06:54,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 13:06:54,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 13:06:54,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 13:06:54,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 13:06:54,025 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 13:06:54,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 13:06:54,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 13:06:54,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 13:06:54,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 13:06:54,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 13:06:54,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 13:06:54,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 13:06:54,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 13:06:54,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 13:06:54,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 13:06:54,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 13:06:54,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 13:06:54,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 13:06:54,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 13:06:54,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 13:06:54,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 13:06:54,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 13:06:54,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 13:06:54,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 13:06:54,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 13:06:54,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 13:06:54,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 13:06:54,031 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.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; [2020-09-21 13:06:54,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 13:06:54,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 13:06:54,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 13:06:54,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 13:06:54,497 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 13:06:54,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 13:06:54,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1184280d8/761992e88ae84aef901d81ed48f10e88/FLAG0b606450b [2020-09-21 13:06:55,366 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 13:06:55,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 13:06:55,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1184280d8/761992e88ae84aef901d81ed48f10e88/FLAG0b606450b [2020-09-21 13:06:55,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1184280d8/761992e88ae84aef901d81ed48f10e88 [2020-09-21 13:06:55,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 13:06:55,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 13:06:55,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:55,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 13:06:55,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 13:06:55,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:55" (1/1) ... [2020-09-21 13:06:55,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1b9a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:55, skipping insertion in model container [2020-09-21 13:06:55,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:55" (1/1) ... [2020-09-21 13:06:55,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 13:06:55,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 13:06:56,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:56,978 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 13:06:57,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:57,484 INFO L208 MainTranslator]: Completed translation [2020-09-21 13:06:57,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57 WrapperNode [2020-09-21 13:06:57,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:57,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 13:06:57,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 13:06:57,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 13:06:57,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (1/1) ... [2020-09-21 13:06:57,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 13:06:57,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 13:06:57,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 13:06:57,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 13:06:57,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (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 [2020-09-21 13:06:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 13:06:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 13:06:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-09-21 13:06:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-09-21 13:06:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-09-21 13:06:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-09-21 13:06:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-09-21 13:06:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-09-21 13:06:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-09-21 13:06:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 13:06:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-09-21 13:06:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-09-21 13:06:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-09-21 13:06:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-09-21 13:06:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-09-21 13:06:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-09-21 13:06:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-09-21 13:06:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 13:06:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 13:06:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 13:06:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 13:06:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-09-21 13:06:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-09-21 13:06:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-09-21 13:06:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-09-21 13:06:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-09-21 13:06:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-09-21 13:06:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-09-21 13:06:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-09-21 13:06:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-09-21 13:06:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-09-21 13:06:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-09-21 13:06:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-09-21 13:06:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-21 13:06:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-21 13:06:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-09-21 13:06:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-09-21 13:06:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-21 13:06:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-21 13:06:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-21 13:06:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-21 13:06:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-21 13:06:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 13:06:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 13:06:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 13:06:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 13:06:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-21 13:06:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-21 13:06:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 13:06:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-09-21 13:06:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-09-21 13:06:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-09-21 13:06:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 13:06:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-21 13:06:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-09-21 13:06:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-09-21 13:06:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-09-21 13:06:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-09-21 13:06:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-09-21 13:06:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-09-21 13:06:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-09-21 13:06:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-09-21 13:06:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-09-21 13:06:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-21 13:06:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-09-21 13:06:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-21 13:06:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-21 13:06:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-09-21 13:06:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-21 13:06:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 13:06:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 13:06:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 13:06:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-09-21 13:06:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 13:06:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-21 13:06:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-21 13:06:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-21 13:06:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-21 13:06:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-09-21 13:06:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-09-21 13:06:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-09-21 13:06:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 13:06:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-09-21 13:06:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-09-21 13:06:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-09-21 13:06:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 13:06:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-09-21 13:06:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-09-21 13:06:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-09-21 13:06:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-09-21 13:06:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-09-21 13:06:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-09-21 13:06:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-09-21 13:06:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-21 13:06:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 13:06:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 13:06:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 13:06:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 13:06:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 13:06:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 13:06:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 13:06:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 13:06:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 13:06:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 13:06:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 13:06:57,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 13:06:57,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 13:06:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 13:06:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 13:06:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-09-21 13:06:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-21 13:06:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-09-21 13:06:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-21 13:06:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 13:06:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-09-21 13:06:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 13:06:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 13:06:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-21 13:06:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 13:06:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 13:06:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 13:06:58,553 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 13:07:00,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 13:07:00,637 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 13:07:00,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:07:00 BoogieIcfgContainer [2020-09-21 13:07:00,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 13:07:00,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 13:07:00,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 13:07:00,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 13:07:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 01:06:55" (1/3) ... [2020-09-21 13:07:00,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a490196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:07:00, skipping insertion in model container [2020-09-21 13:07:00,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:57" (2/3) ... [2020-09-21 13:07:00,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a490196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:07:00, skipping insertion in model container [2020-09-21 13:07:00,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:07:00" (3/3) ... [2020-09-21 13:07:00,656 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 [2020-09-21 13:07:00,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 13:07:00,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 13:07:00,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 13:07:00,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 13:07:00,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 13:07:00,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 13:07:00,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 13:07:00,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 13:07:00,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 13:07:00,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 13:07:00,738 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 13:07:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-09-21 13:07:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 13:07:00,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:00,789 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 13:07:00,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:00,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-09-21 13:07:00,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:00,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460610698] [2020-09-21 13:07:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:02,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 13:07:02,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 13:07:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 13:07:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 13:07:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 13:07:02,821 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 13:07:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:02,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:02,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:02,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-21 13:07:02,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:02,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 13:07:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:03,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 13:07:03,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:03,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 13:07:03,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 13:07:03,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 13:07:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:03,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-21 13:07:03,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 13:07:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:03,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 13:07:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 13:07:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 13:07:03,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 13:07:03,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 13:07:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:03,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 13:07:03,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 13:07:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 13:07:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 13:07:03,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460610698] [2020-09-21 13:07:03,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:03,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 13:07:03,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755096916] [2020-09-21 13:07:03,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 13:07:03,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:03,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 13:07:03,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 13:07:03,963 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 8 states. [2020-09-21 13:07:06,732 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 13:07:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:16,969 INFO L93 Difference]: Finished difference Result 1985 states and 2806 transitions. [2020-09-21 13:07:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 13:07:16,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-21 13:07:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:17,005 INFO L225 Difference]: With dead ends: 1985 [2020-09-21 13:07:17,005 INFO L226 Difference]: Without dead ends: 1458 [2020-09-21 13:07:17,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-09-21 13:07:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-09-21 13:07:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 904. [2020-09-21 13:07:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-09-21 13:07:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1106 transitions. [2020-09-21 13:07:17,353 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1106 transitions. Word has length 66 [2020-09-21 13:07:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:17,357 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1106 transitions. [2020-09-21 13:07:17,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 13:07:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1106 transitions. [2020-09-21 13:07:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 13:07:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:17,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 13:07:17,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 13:07:17,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2064302957, now seen corresponding path program 1 times [2020-09-21 13:07:17,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:17,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319928973] [2020-09-21 13:07:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:18,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:18,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 13:07:18,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:18,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-09-21 13:07:18,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 13:07:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,050 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 13:07:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 13:07:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 13:07:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 13:07:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:19,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 13:07:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:19,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 13:07:19,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 13:07:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:19,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 13:07:19,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 13:07:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-21 13:07:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 13:07:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 13:07:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 13:07:19,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 13:07:19,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 13:07:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 13:07:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 13:07:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:19,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:19,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 13:07:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:20,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:20,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 13:07:20,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 13:07:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:20,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:20,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 13:07:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 13:07:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:20,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:20,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 13:07:20,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 13:07:20,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319928973] [2020-09-21 13:07:20,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 13:07:20,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 13:07:20,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867872979] [2020-09-21 13:07:20,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 13:07:20,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:20,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 13:07:20,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 13:07:20,326 INFO L87 Difference]: Start difference. First operand 904 states and 1106 transitions. Second operand 10 states. [2020-09-21 13:07:25,340 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 13:07:25,709 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-21 13:07:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:31,409 INFO L93 Difference]: Finished difference Result 2198 states and 2857 transitions. [2020-09-21 13:07:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 13:07:31,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-09-21 13:07:31,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:31,417 INFO L225 Difference]: With dead ends: 2198 [2020-09-21 13:07:31,418 INFO L226 Difference]: Without dead ends: 1310 [2020-09-21 13:07:31,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-21 13:07:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-21 13:07:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 905. [2020-09-21 13:07:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-09-21 13:07:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1107 transitions. [2020-09-21 13:07:31,587 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1107 transitions. Word has length 82 [2020-09-21 13:07:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:31,588 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1107 transitions. [2020-09-21 13:07:31,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 13:07:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1107 transitions. [2020-09-21 13:07:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 13:07:31,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:31,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 13:07:31,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 13:07:31,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash 631612043, now seen corresponding path program 1 times [2020-09-21 13:07:31,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:31,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580535189] [2020-09-21 13:07:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:32,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 13:07:32,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-21 13:07:32,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 13:07:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 13:07:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 13:07:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,091 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 13:07:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 13:07:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:33,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 13:07:33,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 13:07:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:33,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 13:07:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 13:07:33,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 13:07:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:33,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 13:07:33,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 13:07:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:33,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 13:07:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-21 13:07:33,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 13:07:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 13:07:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 13:07:33,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 13:07:33,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 13:07:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 13:07:34,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 13:07:34,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:34,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 13:07:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 13:07:34,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 13:07:34,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 13:07:34,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 13:07:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 13:07:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 13:07:34,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580535189] [2020-09-21 13:07:34,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 13:07:34,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 13:07:34,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309897969] [2020-09-21 13:07:34,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 13:07:34,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 13:07:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:34,362 INFO L87 Difference]: Start difference. First operand 905 states and 1107 transitions. Second operand 11 states. [2020-09-21 13:07:40,573 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 13:07:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:48,111 INFO L93 Difference]: Finished difference Result 2200 states and 2859 transitions. [2020-09-21 13:07:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 13:07:48,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-21 13:07:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:48,120 INFO L225 Difference]: With dead ends: 2200 [2020-09-21 13:07:48,120 INFO L226 Difference]: Without dead ends: 1311 [2020-09-21 13:07:48,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-09-21 13:07:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-21 13:07:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 906. [2020-09-21 13:07:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-09-21 13:07:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1108 transitions. [2020-09-21 13:07:48,238 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1108 transitions. Word has length 84 [2020-09-21 13:07:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:48,238 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1108 transitions. [2020-09-21 13:07:48,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 13:07:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1108 transitions. [2020-09-21 13:07:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 13:07:48,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:48,241 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 13:07:48,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 13:07:48,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1933930989, now seen corresponding path program 2 times [2020-09-21 13:07:48,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:48,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762438833] [2020-09-21 13:07:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-21 13:07:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-09-21 13:07:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 13:07:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-21 13:07:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:49,814 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 13:07:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:49,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 13:07:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 13:07:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:50,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 13:07:50,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 13:07:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 13:07:50,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 13:07:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 13:07:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-21 13:07:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 13:07:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 13:07:50,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-21 13:07:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 13:07:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 13:07:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 13:07:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 13:07:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 13:07:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 13:07:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 13:07:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:51,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 13:07:51,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 13:07:51,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0