/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 interpolation-heuristic=FIRST --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 12:02:30,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:02:30,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:02:30,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:02:30,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:02:30,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:02:30,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:02:30,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:02:30,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:02:30,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:02:30,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:02:30,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:02:30,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:02:30,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:02:30,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:02:30,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:02:30,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:02:30,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:02:30,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:02:30,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:02:30,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:02:30,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:02:30,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:02:30,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:02:30,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:02:31,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:02:31,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:02:31,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:02:31,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:02:31,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:02:31,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:02:31,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:02:31,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:02:31,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:02:31,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:02:31,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:02:31,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:02:31,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:02:31,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:02:31,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:02:31,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:02:31,015 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 12:02:31,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:02:31,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:02:31,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:02:31,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:02:31,044 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:02:31,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:02:31,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:02:31,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:02:31,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:02:31,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:02:31,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:02:31,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:02:31,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:02:31,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:02:31,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:02:31,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:02:31,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:02:31,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:02:31,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:02:31,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:02:31,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:02:31,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:02:31,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:02:31,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:02:31,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:02:31,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:02:31,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 12:02:31,049 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 12:02:31,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:02:31,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:02:31,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:02:31,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:02:31,518 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:02:31,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 12:02:31,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7f57a14/ccc13c7ca7de4fa2bcbff86ef558ffff/FLAGe8293a381 [2020-09-21 12:02:32,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:02:32,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 12:02:32,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7f57a14/ccc13c7ca7de4fa2bcbff86ef558ffff/FLAGe8293a381 [2020-09-21 12:02:33,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7f57a14/ccc13c7ca7de4fa2bcbff86ef558ffff [2020-09-21 12:02:33,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:02:33,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:02:33,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:02:33,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:02:33,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:02:33,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:02:33" (1/1) ... [2020-09-21 12:02:33,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa7b010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:33, skipping insertion in model container [2020-09-21 12:02:33,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:02:33" (1/1) ... [2020-09-21 12:02:33,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:02:33,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:02:34,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:02:34,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:02:35,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:02:35,274 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:02:35,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35 WrapperNode [2020-09-21 12:02:35,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:02:35,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:02:35,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:02:35,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:02:35,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (1/1) ... [2020-09-21 12:02:35,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:02:35,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:02:35,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:02:35,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:02:35,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (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 12:02:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:02:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:02:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-09-21 12:02:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-09-21 12:02:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-09-21 12:02:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-09-21 12:02:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-09-21 12:02:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-09-21 12:02:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-09-21 12:02:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 12:02:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-09-21 12:02:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-09-21 12:02:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-09-21 12:02:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-09-21 12:02:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-09-21 12:02:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-09-21 12:02:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-09-21 12:02:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:02:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 12:02:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 12:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 12:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-09-21 12:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-09-21 12:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-09-21 12:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-09-21 12:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-09-21 12:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-09-21 12:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-09-21 12:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-09-21 12:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-09-21 12:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-09-21 12:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-09-21 12:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-09-21 12:02:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-21 12:02:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:02:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-21 12:02:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-21 12:02:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-21 12:02:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-21 12:02:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-21 12:02:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-21 12:02:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-21 12:02:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 12:02:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-21 12:02:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-21 12:02:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-21 12:02:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-21 12:02:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-21 12:02:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 12:02:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-09-21 12:02:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-09-21 12:02:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-09-21 12:02:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 12:02:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-21 12:02:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-09-21 12:02:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-09-21 12:02:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-09-21 12:02:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-09-21 12:02:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-09-21 12:02:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-09-21 12:02:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-09-21 12:02:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-09-21 12:02:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-21 12:02:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-09-21 12:02:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-09-21 12:02:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-21 12:02:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-09-21 12:02:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-09-21 12:02:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-21 12:02:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-09-21 12:02:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-21 12:02:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-21 12:02:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-09-21 12:02:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-21 12:02:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 12:02:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 12:02:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 12:02:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-09-21 12:02:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:02:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 12:02:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-09-21 12:02:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-09-21 12:02:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-09-21 12:02:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 12:02:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-09-21 12:02:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-09-21 12:02:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 12:02:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:02:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-21 12:02:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-21 12:02:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-21 12:02:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-21 12:02:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-21 12:02:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-09-21 12:02:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-09-21 12:02:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-09-21 12:02:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:02:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-09-21 12:02:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-09-21 12:02:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-09-21 12:02:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:02:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-09-21 12:02:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-09-21 12:02:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-09-21 12:02:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-09-21 12:02:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-09-21 12:02:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-09-21 12:02:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-09-21 12:02:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-21 12:02:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:02:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:02:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:02:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 12:02:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 12:02:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 12:02:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 12:02:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 12:02:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 12:02:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 12:02:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-09-21 12:02:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-21 12:02:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-09-21 12:02:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-09-21 12:02:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-09-21 12:02:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-09-21 12:02:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-09-21 12:02:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-09-21 12:02:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-09-21 12:02:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-09-21 12:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-21 12:02:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-09-21 12:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-09-21 12:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-09-21 12:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-09-21 12:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-09-21 12:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:02:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 12:02:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-21 12:02:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-21 12:02:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 12:02:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 12:02:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 12:02:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 12:02:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 12:02:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 12:02:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:02:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 12:02:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 12:02:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 12:02:36,240 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 12:02:38,263 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:02:38,264 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 12:02:38,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:02:38 BoogieIcfgContainer [2020-09-21 12:02:38,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:02:38,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:02:38,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:02:38,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:02:38,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:02:33" (1/3) ... [2020-09-21 12:02:38,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad13b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:02:38, skipping insertion in model container [2020-09-21 12:02:38,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:35" (2/3) ... [2020-09-21 12:02:38,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad13b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:02:38, skipping insertion in model container [2020-09-21 12:02:38,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:02:38" (3/3) ... [2020-09-21 12:02:38,285 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 12:02:38,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:02:38,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:02:38,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:02:38,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:02:38,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:02:38,373 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:02:38,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:02:38,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:02:38,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:02:38,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:02:38,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:02:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-09-21 12:02:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 12:02:38,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:02:38,430 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 12:02:38,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:02:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:02:38,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-09-21 12:02:38,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:02:38,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471728205] [2020-09-21 12:02:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:02:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,042 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 12:02:39,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:02:39,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:02:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 12:02:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:02:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:39,533 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 12:02:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:39,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:02:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,700 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,701 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,701 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,701 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:39,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:39,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:02:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:39,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:02:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:02:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,801 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,802 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,802 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:39,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:39,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:02:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:02:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:02:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:02:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:02:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 12:02:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,918 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,919 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:02:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:02:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,966 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:02:39,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:02:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:39,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:39,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:39,985 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:39,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:02:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:39,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:02:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:40,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:40,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:40,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:40,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:40,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:40,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:40,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 12:02:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:40,031 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:40,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:40,032 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:40,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:40,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:02:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:02:40,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471728205] [2020-09-21 12:02:40,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:02:40,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:02:40,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287572083] [2020-09-21 12:02:40,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:02:40,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:02:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:02:40,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:02:40,110 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-09-21 12:02:45,664 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 12:02:46,005 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-21 12:02:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:02:52,086 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-09-21 12:02:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:02:52,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-09-21 12:02:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:02:52,114 INFO L225 Difference]: With dead ends: 1218 [2020-09-21 12:02:52,114 INFO L226 Difference]: Without dead ends: 705 [2020-09-21 12:02:52,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:02:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-21 12:02:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-09-21 12:02:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-09-21 12:02:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-09-21 12:02:52,296 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-09-21 12:02:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:02:52,297 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-09-21 12:02:52,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:02:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-09-21 12:02:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 12:02:52,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:02:52,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:52,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:02:52,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:02:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:02:52,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-09-21 12:02:52,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:02:52,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272291429] [2020-09-21 12:02:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:02:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,416 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,416 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,417 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,417 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 12:02:52,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:02:52,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:02:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 12:02:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:02:52,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:52,809 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 12:02:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,823 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,823 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:52,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:52,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:52,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:52,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:02:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,911 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,911 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,911 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:02:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,929 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,929 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,929 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,930 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:52,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:52,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:02:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,959 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,959 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:02:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:52,975 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:52,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:52,975 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:02:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:02:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:02:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:02:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:02:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:02:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,099 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,099 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,099 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:02:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:02:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:02:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:02:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,159 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:02:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:53,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:02:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,179 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:53,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:53,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 12:02:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:53,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:53,197 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:53,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:53,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:53,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:53,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:53,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:02:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:02:53,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272291429] [2020-09-21 12:02:53,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:02:53,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:02:53,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837389938] [2020-09-21 12:02:53,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:02:53,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:02:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:02:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:02:53,232 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-09-21 12:02:57,682 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 12:03:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:04,566 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-09-21 12:03:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:03:04,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-09-21 12:03:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:04,572 INFO L225 Difference]: With dead ends: 1183 [2020-09-21 12:03:04,572 INFO L226 Difference]: Without dead ends: 706 [2020-09-21 12:03:04,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:03:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-21 12:03:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-09-21 12:03:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-09-21 12:03:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-09-21 12:03:04,665 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-09-21 12:03:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:04,665 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-09-21 12:03:04,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:03:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-09-21 12:03:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 12:03:04,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:04,669 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:04,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:03:04,670 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:04,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-09-21 12:03:04,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:04,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380533716] [2020-09-21 12:03:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:04,812 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:04,812 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:04,813 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:04,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:04,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 12:03:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:03:04,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:03:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 12:03:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:03:05,177 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 12:03:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:03:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,320 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,321 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,321 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,321 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:05,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:03:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,392 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:03:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:03:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:03:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,464 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:03:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:03:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:03:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:03:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,529 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:05,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 12:03:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:05,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:03:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:03:05,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380533716] [2020-09-21 12:03:05,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:03:05,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:03:05,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966128388] [2020-09-21 12:03:05,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:03:05,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:03:05,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:03:05,580 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-09-21 12:03:10,611 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 12:03:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:17,260 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-09-21 12:03:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:03:17,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-09-21 12:03:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:17,266 INFO L225 Difference]: With dead ends: 1185 [2020-09-21 12:03:17,266 INFO L226 Difference]: Without dead ends: 707 [2020-09-21 12:03:17,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:03:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-21 12:03:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-09-21 12:03:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-09-21 12:03:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-09-21 12:03:17,344 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-09-21 12:03:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:17,345 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-09-21 12:03:17,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:03:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-09-21 12:03:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 12:03:17,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:17,347 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:17,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:03:17,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:17,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-09-21 12:03:17,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:17,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593601727] [2020-09-21 12:03:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,453 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,453 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,453 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:03:17,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:03:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:03:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 12:03:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,808 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 12:03:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,817 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,881 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,882 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:17,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,897 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,897 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,898 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:17,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,925 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,925 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:03:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:17,939 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:17,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:17,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:17,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:17,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:03:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,004 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:03:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:03:18,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:03:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:03:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:03:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,102 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,102 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,102 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:03:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:18,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 12:03:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:03:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:03:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:03:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:18,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,170 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:03:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:18,185 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:18,185 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:18,185 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:03:18,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593601727] [2020-09-21 12:03:18,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:03:18,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:03:18,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304495605] [2020-09-21 12:03:18,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:03:18,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:03:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:03:18,215 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-09-21 12:03:24,087 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 12:03:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:32,642 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-09-21 12:03:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:03:32,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-21 12:03:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:32,649 INFO L225 Difference]: With dead ends: 1187 [2020-09-21 12:03:32,650 INFO L226 Difference]: Without dead ends: 708 [2020-09-21 12:03:32,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:03:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-09-21 12:03:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-09-21 12:03:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-09-21 12:03:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-09-21 12:03:32,718 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-09-21 12:03:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:32,719 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-09-21 12:03:32,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:03:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-09-21 12:03:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 12:03:32,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:32,721 INFO L422 BasicCegarLoop]: trace histogram [8, 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 12:03:32,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:03:32,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:32,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-09-21 12:03:32,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:32,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273098124] [2020-09-21 12:03:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:32,807 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:32,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-21 12:03:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,208 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 12:03:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:33,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,301 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,301 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:33,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,341 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:03:33,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,351 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:33,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:03:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,382 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,382 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,382 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:03:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 12:03:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:03:33,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:03:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,450 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,450 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,450 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,451 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:33,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,465 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,466 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:33,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:03:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:33,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:33,480 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:33,481 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:33,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-21 12:03:33,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273098124] [2020-09-21 12:03:33,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:03:33,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:03:33,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712422467] [2020-09-21 12:03:33,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:03:33,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:33,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:03:33,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:03:33,506 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states.