/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.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:24:31,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:24:31,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:24:31,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:24:31,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:24:31,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:24:31,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:24:31,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:24:31,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:24:31,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:24:31,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:24:31,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:24:31,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:24:31,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:24:31,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:24:31,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:24:31,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:24:31,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:24:31,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:24:31,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:24:31,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:24:31,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:24:31,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:24:31,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:24:31,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 02:24:31,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 02:24:31,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 02:24:31,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 02:24:31,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 02:24:31,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 02:24:31,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 02:24:31,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 02:24:31,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 02:24:31,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 02:24:31,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 02:24:31,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 02:24:31,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 02:24:31,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 02:24:31,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:24:31,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:24:31,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:24:31,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-07-20 02:24:31,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:24:31,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:24:31,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:24:31,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:24:31,585 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:24:31,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:24:31,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:24:31,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:24:31,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:24:31,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:24:31,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:24:31,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:24:31,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:24:31,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:24:31,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:24:31,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:24:31,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:24:31,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:24:31,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:24:31,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:24:31,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:24:31,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:24:31,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:24:31,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:24:31,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:24:31,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:24:31,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-20 02:24:31,589 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 02:24:31,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:24:31,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:24:31,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:24:31,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:24:31,878 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:24:31,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 02:24:31,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f33dfb77/b94eafd7ece64f9cbec7f377b813cbed/FLAG1fd180e9b [2020-07-20 02:24:32,653 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:24:32,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 02:24:32,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f33dfb77/b94eafd7ece64f9cbec7f377b813cbed/FLAG1fd180e9b [2020-07-20 02:24:32,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f33dfb77/b94eafd7ece64f9cbec7f377b813cbed [2020-07-20 02:24:32,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:24:32,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:24:32,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:24:32,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:24:32,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:24:32,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:24:32" (1/1) ... [2020-07-20 02:24:32,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7593a2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:32, skipping insertion in model container [2020-07-20 02:24:32,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:24:32" (1/1) ... [2020-07-20 02:24:32,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:24:32,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:24:33,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:24:33,817 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:24:34,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:24:34,114 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:24:34,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34 WrapperNode [2020-07-20 02:24:34,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:24:34,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:24:34,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:24:34,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:24:34,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... [2020-07-20 02:24:34,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:24:34,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:24:34,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:24:34,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:24:34,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 02:24:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:24:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:24:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-20 02:24:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-20 02:24:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-07-20 02:24:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-07-20 02:24:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-07-20 02:24:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-07-20 02:24:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-07-20 02:24:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-07-20 02:24:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-07-20 02:24:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-07-20 02:24:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-07-20 02:24:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:24:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-07-20 02:24:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-20 02:24:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-20 02:24:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-20 02:24:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-20 02:24:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-20 02:24:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-20 02:24:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-07-20 02:24:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-07-20 02:24:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-07-20 02:24:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-20 02:24:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-07-20 02:24:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-07-20 02:24:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-07-20 02:24:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-07-20 02:24:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-07-20 02:24:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-07-20 02:24:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-07-20 02:24:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-07-20 02:24:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-20 02:24:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-20 02:24:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-07-20 02:24:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-07-20 02:24:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-07-20 02:24:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-07-20 02:24:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-07-20 02:24:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-07-20 02:24:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-07-20 02:24:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-07-20 02:24:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-07-20 02:24:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 02:24:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 02:24:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 02:24:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 02:24:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-20 02:24:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-07-20 02:24:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 02:24:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:24:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-07-20 02:24:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-07-20 02:24:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 02:24:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-20 02:24:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 02:24:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:24:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 02:24:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 02:24:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:24:34,689 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 02:24:34,789 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-20 02:24:34,790 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-20 02:24:34,790 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-07-20 02:24:34,790 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-07-20 02:24:34,791 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 02:24:34,844 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-07-20 02:24:34,844 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-07-20 02:24:34,911 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-20 02:24:35,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:24:35,020 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 02:24:35,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:24:35 BoogieIcfgContainer [2020-07-20 02:24:35,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:24:35,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:24:35,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:24:35,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:24:35,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:24:32" (1/3) ... [2020-07-20 02:24:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b345c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:24:35, skipping insertion in model container [2020-07-20 02:24:35,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:34" (2/3) ... [2020-07-20 02:24:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b345c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:24:35, skipping insertion in model container [2020-07-20 02:24:35,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:24:35" (3/3) ... [2020-07-20 02:24:35,032 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 02:24:35,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:24:35,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 02:24:35,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 02:24:35,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:24:35,085 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:24:35,086 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:24:35,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:24:35,086 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:24:35,086 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:24:35,086 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:24:35,086 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:24:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-07-20 02:24:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 02:24:35,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:35,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:24:35,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1611807670, now seen corresponding path program 1 times [2020-07-20 02:24:35,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:35,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861529341] [2020-07-20 02:24:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58101662 [2020-07-20 02:24:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:24:35,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861529341] [2020-07-20 02:24:35,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:24:35,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:24:35,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783923031] [2020-07-20 02:24:35,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:24:35,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:24:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:24:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:24:35,583 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 4 states. [2020-07-20 02:24:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:36,161 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2020-07-20 02:24:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:24:36,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 02:24:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:36,177 INFO L225 Difference]: With dead ends: 241 [2020-07-20 02:24:36,177 INFO L226 Difference]: Without dead ends: 153 [2020-07-20 02:24:36,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:24:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-20 02:24:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-07-20 02:24:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-20 02:24:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-07-20 02:24:36,252 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 24 [2020-07-20 02:24:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:24:36,252 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-07-20 02:24:36,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:24:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-07-20 02:24:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 02:24:36,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:36,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:24:36,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:24:36,257 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:36,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:36,257 INFO L82 PathProgramCache]: Analyzing trace with hash 321457227, now seen corresponding path program 1 times [2020-07-20 02:24:36,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:36,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392068814] [2020-07-20 02:24:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58101662 [2020-07-20 02:24:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:24:36,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392068814] [2020-07-20 02:24:36,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:24:36,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 02:24:36,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230460740] [2020-07-20 02:24:36,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 02:24:36,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:24:36,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 02:24:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:24:36,520 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 9 states. [2020-07-20 02:24:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:37,170 INFO L93 Difference]: Finished difference Result 269 states and 321 transitions. [2020-07-20 02:24:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 02:24:37,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-07-20 02:24:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:37,176 INFO L225 Difference]: With dead ends: 269 [2020-07-20 02:24:37,176 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 02:24:37,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-20 02:24:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 02:24:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2020-07-20 02:24:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 02:24:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2020-07-20 02:24:37,221 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 56 [2020-07-20 02:24:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:24:37,221 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2020-07-20 02:24:37,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 02:24:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2020-07-20 02:24:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 02:24:37,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:37,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:24:37,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:24:37,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash 751196711, now seen corresponding path program 1 times [2020-07-20 02:24:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:37,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852140325] [2020-07-20 02:24:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58101662 [2020-07-20 02:24:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:24:37,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852140325] [2020-07-20 02:24:37,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:24:37,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 02:24:37,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593883721] [2020-07-20 02:24:37,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 02:24:37,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:24:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 02:24:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 02:24:37,498 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand 7 states. [2020-07-20 02:24:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:38,087 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2020-07-20 02:24:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 02:24:38,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-07-20 02:24:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:38,090 INFO L225 Difference]: With dead ends: 186 [2020-07-20 02:24:38,090 INFO L226 Difference]: Without dead ends: 183 [2020-07-20 02:24:38,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-20 02:24:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-07-20 02:24:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-07-20 02:24:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 02:24:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2020-07-20 02:24:38,124 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 62 [2020-07-20 02:24:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:24:38,125 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2020-07-20 02:24:38,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 02:24:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2020-07-20 02:24:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 02:24:38,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:38,127 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:24:38,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:24:38,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1928601058, now seen corresponding path program 1 times [2020-07-20 02:24:38,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:38,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151801474] [2020-07-20 02:24:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58101662 [2020-07-20 02:24:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:24:38,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151801474] [2020-07-20 02:24:38,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:24:38,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 02:24:38,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140656642] [2020-07-20 02:24:38,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 02:24:38,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:24:38,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 02:24:38,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:24:38,388 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 9 states. [2020-07-20 02:24:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:38,864 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2020-07-20 02:24:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 02:24:38,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-07-20 02:24:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:38,870 INFO L225 Difference]: With dead ends: 201 [2020-07-20 02:24:38,870 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 02:24:38,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:24:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 02:24:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-07-20 02:24:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 02:24:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2020-07-20 02:24:38,905 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 66 [2020-07-20 02:24:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:24:38,905 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2020-07-20 02:24:38,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 02:24:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2020-07-20 02:24:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-20 02:24:38,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:38,914 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:24:38,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:24:38,914 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -167984647, now seen corresponding path program 1 times [2020-07-20 02:24:38,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:38,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876281623] [2020-07-20 02:24:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58101662 [2020-07-20 02:24:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:39,013 ERROR L253 erpolLogProxyWrapper]: Interpolant 19 not inductive [2020-07-20 02:24:39,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:24:39,014 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-20 02:24:39,022 INFO L168 Benchmark]: Toolchain (without parser) took 6281.35 ms. Allocated memory was 136.8 MB in the beginning and 312.0 MB in the end (delta: 175.1 MB). Free memory was 95.2 MB in the beginning and 102.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 167.4 MB. Max. memory is 7.1 GB. [2020-07-20 02:24:39,024 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 02:24:39,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1368.84 ms. Allocated memory was 136.8 MB in the beginning and 206.6 MB in the end (delta: 69.7 MB). Free memory was 94.8 MB in the beginning and 127.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-07-20 02:24:39,027 INFO L168 Benchmark]: Boogie Preprocessor took 120.95 ms. Allocated memory is still 206.6 MB. Free memory was 127.5 MB in the beginning and 124.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-20 02:24:39,033 INFO L168 Benchmark]: RCFGBuilder took 787.19 ms. Allocated memory was 206.6 MB in the beginning and 237.0 MB in the end (delta: 30.4 MB). Free memory was 123.6 MB in the beginning and 177.5 MB in the end (delta: -53.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-07-20 02:24:39,034 INFO L168 Benchmark]: TraceAbstraction took 3993.94 ms. Allocated memory was 237.0 MB in the beginning and 312.0 MB in the end (delta: 75.0 MB). Free memory was 177.5 MB in the beginning and 102.8 MB in the end (delta: 74.6 MB). Peak memory consumption was 149.6 MB. Max. memory is 7.1 GB. [2020-07-20 02:24:39,043 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1368.84 ms. Allocated memory was 136.8 MB in the beginning and 206.6 MB in the end (delta: 69.7 MB). Free memory was 94.8 MB in the beginning and 127.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.95 ms. Allocated memory is still 206.6 MB. Free memory was 127.5 MB in the beginning and 124.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 787.19 ms. Allocated memory was 206.6 MB in the beginning and 237.0 MB in the end (delta: 30.4 MB). Free memory was 123.6 MB in the beginning and 177.5 MB in the end (delta: -53.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3993.94 ms. Allocated memory was 237.0 MB in the beginning and 312.0 MB in the end (delta: 75.0 MB). Free memory was 177.5 MB in the beginning and 102.8 MB in the end (delta: 74.6 MB). Peak memory consumption was 149.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...