/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_FUNCTIONS --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 00:15:38,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 00:15:38,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 00:15:38,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 00:15:38,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 00:15:38,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 00:15:38,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 00:15:38,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 00:15:38,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 00:15:38,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 00:15:38,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 00:15:38,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 00:15:38,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 00:15:38,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 00:15:38,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 00:15:38,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 00:15:38,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 00:15:38,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 00:15:38,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 00:15:38,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 00:15:38,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 00:15:38,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 00:15:38,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 00:15:38,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 00:15:38,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 00:15:38,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 00:15:38,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 00:15:38,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 00:15:38,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 00:15:38,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 00:15:38,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 00:15:38,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 00:15:38,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 00:15:38,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 00:15:38,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 00:15:38,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 00:15:38,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 00:15:38,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 00:15:38,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 00:15:38,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 00:15:38,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 00:15:38,326 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 00:15:38,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 00:15:38,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 00:15:38,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 00:15:38,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 00:15:38,350 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 00:15:38,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 00:15:38,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 00:15:38,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 00:15:38,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 00:15:38,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 00:15:38,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 00:15:38,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 00:15:38,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 00:15:38,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 00:15:38,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 00:15:38,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 00:15:38,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 00:15:38,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 00:15:38,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:15:38,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 00:15:38,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 00:15:38,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 00:15:38,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 00:15:38,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 00:15:38,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 00:15:38,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 00:15:38,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-20 00:15:38,356 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_FUNCTIONS 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 00:15:38,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 00:15:38,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 00:15:38,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 00:15:38,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 00:15:38,677 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 00:15:38,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 00:15:38,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1901ae9ee/cb3fa091a9344e578a2e5ce4d9a1e251/FLAGc7c93f992 [2020-07-20 00:15:39,515 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 00:15:39,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 00:15:39,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1901ae9ee/cb3fa091a9344e578a2e5ce4d9a1e251/FLAGc7c93f992 [2020-07-20 00:15:39,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1901ae9ee/cb3fa091a9344e578a2e5ce4d9a1e251 [2020-07-20 00:15:39,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 00:15:39,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 00:15:39,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 00:15:39,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 00:15:39,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 00:15:39,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:15:39" (1/1) ... [2020-07-20 00:15:39,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b90e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:39, skipping insertion in model container [2020-07-20 00:15:39,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:15:39" (1/1) ... [2020-07-20 00:15:39,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 00:15:39,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 00:15:40,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:15:40,835 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 00:15:41,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:15:41,090 INFO L208 MainTranslator]: Completed translation [2020-07-20 00:15:41,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41 WrapperNode [2020-07-20 00:15:41,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 00:15:41,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 00:15:41,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 00:15:41,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 00:15:41,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (1/1) ... [2020-07-20 00:15:41,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 00:15:41,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 00:15:41,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 00:15:41,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 00:15:41,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (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 00:15:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 00:15:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 00:15:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-20 00:15:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-20 00:15:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-07-20 00:15:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-07-20 00:15:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-07-20 00:15:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-07-20 00:15:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-07-20 00:15:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-07-20 00:15:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-07-20 00:15:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-07-20 00:15:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-07-20 00:15:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 00:15:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-07-20 00:15:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-20 00:15:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-20 00:15:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-20 00:15:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-20 00:15:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-20 00:15:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-20 00:15:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-07-20 00:15:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-07-20 00:15:41,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-07-20 00:15:41,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-07-20 00:15:41,301 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-07-20 00:15:41,301 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-07-20 00:15:41,301 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-07-20 00:15:41,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-07-20 00:15:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-07-20 00:15:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-07-20 00:15:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 00:15:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-20 00:15:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 00:15:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 00:15:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 00:15:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 00:15:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 00:15:41,623 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 00:15:41,789 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-20 00:15:41,789 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-20 00:15:41,790 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-07-20 00:15:41,790 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-07-20 00:15:41,791 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 00:15:41,833 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-07-20 00:15:41,833 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-07-20 00:15:41,960 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-20 00:15:42,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 00:15:42,105 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 00:15:42,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:15:42 BoogieIcfgContainer [2020-07-20 00:15:42,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 00:15:42,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 00:15:42,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 00:15:42,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 00:15:42,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:15:39" (1/3) ... [2020-07-20 00:15:42,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d59611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:15:42, skipping insertion in model container [2020-07-20 00:15:42,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:15:41" (2/3) ... [2020-07-20 00:15:42,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d59611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:15:42, skipping insertion in model container [2020-07-20 00:15:42,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:15:42" (3/3) ... [2020-07-20 00:15:42,119 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-20 00:15:42,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 00:15:42,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 00:15:42,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 00:15:42,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 00:15:42,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 00:15:42,183 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 00:15:42,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 00:15:42,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 00:15:42,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 00:15:42,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 00:15:42,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 00:15:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-07-20 00:15:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 00:15:42,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:15:42,214 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 00:15:42,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:15:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:15:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1611807670, now seen corresponding path program 1 times [2020-07-20 00:15:42,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:15:42,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097214688] [2020-07-20 00:15:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b3a2687 [2020-07-20 00:15:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:42,721 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 00:15:42,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097214688] [2020-07-20 00:15:42,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:15:42,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:15:42,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051529120] [2020-07-20 00:15:42,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:15:42,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:15:42,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:15:42,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:15:42,748 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 4 states. [2020-07-20 00:15:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:15:43,414 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2020-07-20 00:15:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:15:43,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 00:15:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:15:43,439 INFO L225 Difference]: With dead ends: 241 [2020-07-20 00:15:43,439 INFO L226 Difference]: Without dead ends: 153 [2020-07-20 00:15:43,447 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 00:15:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-20 00:15:43,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-07-20 00:15:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-20 00:15:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-07-20 00:15:43,590 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 24 [2020-07-20 00:15:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:15:43,591 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-07-20 00:15:43,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:15:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-07-20 00:15:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 00:15:43,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:15:43,597 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 00:15:43,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 00:15:43,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:15:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:15:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash 321457227, now seen corresponding path program 1 times [2020-07-20 00:15:43,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:15:43,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832587584] [2020-07-20 00:15:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b3a2687 [2020-07-20 00:15:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:43,913 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 00:15:43,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832587584] [2020-07-20 00:15:43,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:15:43,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:15:43,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731471801] [2020-07-20 00:15:43,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:15:43,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:15:43,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:15:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:15:43,918 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 9 states. [2020-07-20 00:15:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:15:44,742 INFO L93 Difference]: Finished difference Result 269 states and 321 transitions. [2020-07-20 00:15:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 00:15:44,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-07-20 00:15:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:15:44,748 INFO L225 Difference]: With dead ends: 269 [2020-07-20 00:15:44,748 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 00:15:44,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-20 00:15:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 00:15:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2020-07-20 00:15:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 00:15:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2020-07-20 00:15:44,773 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 56 [2020-07-20 00:15:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:15:44,774 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2020-07-20 00:15:44,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:15:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2020-07-20 00:15:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 00:15:44,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:15:44,777 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 00:15:44,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 00:15:44,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:15:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:15:44,778 INFO L82 PathProgramCache]: Analyzing trace with hash 751196711, now seen corresponding path program 1 times [2020-07-20 00:15:44,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:15:44,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558604190] [2020-07-20 00:15:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b3a2687 [2020-07-20 00:15:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:44,997 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 00:15:44,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558604190] [2020-07-20 00:15:44,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:15:44,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 00:15:44,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090202553] [2020-07-20 00:15:44,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 00:15:45,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:15:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 00:15:45,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 00:15:45,000 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand 7 states. [2020-07-20 00:15:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:15:45,632 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2020-07-20 00:15:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 00:15:45,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-07-20 00:15:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:15:45,636 INFO L225 Difference]: With dead ends: 186 [2020-07-20 00:15:45,637 INFO L226 Difference]: Without dead ends: 183 [2020-07-20 00:15:45,638 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 00:15:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-07-20 00:15:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-07-20 00:15:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 00:15:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2020-07-20 00:15:45,682 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 62 [2020-07-20 00:15:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:15:45,683 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2020-07-20 00:15:45,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 00:15:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2020-07-20 00:15:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 00:15:45,685 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:15:45,685 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 00:15:45,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 00:15:45,686 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:15:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:15:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1928601058, now seen corresponding path program 1 times [2020-07-20 00:15:45,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:15:45,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175566916] [2020-07-20 00:15:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b3a2687 [2020-07-20 00:15:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:45,902 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 00:15:45,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175566916] [2020-07-20 00:15:45,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:15:45,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:15:45,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398955191] [2020-07-20 00:15:45,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:15:45,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:15:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:15:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:15:45,905 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 9 states. [2020-07-20 00:15:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:15:46,483 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2020-07-20 00:15:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 00:15:46,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-07-20 00:15:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:15:46,487 INFO L225 Difference]: With dead ends: 201 [2020-07-20 00:15:46,487 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 00:15:46,494 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 00:15:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 00:15:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-07-20 00:15:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 00:15:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2020-07-20 00:15:46,525 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 66 [2020-07-20 00:15:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:15:46,525 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2020-07-20 00:15:46,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:15:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2020-07-20 00:15:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-20 00:15:46,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:15:46,531 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 00:15:46,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 00:15:46,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:15:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:15:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash -167984647, now seen corresponding path program 1 times [2020-07-20 00:15:46,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:15:46,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144917813] [2020-07-20 00:15:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b3a2687 [2020-07-20 00:15:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:15:46,661 ERROR L253 erpolLogProxyWrapper]: Interpolant 19 not inductive [2020-07-20 00:15:46,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 00:15:46,663 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 00:15:46,671 INFO L168 Benchmark]: Toolchain (without parser) took 7060.94 ms. Allocated memory was 138.4 MB in the beginning and 325.6 MB in the end (delta: 187.2 MB). Free memory was 95.1 MB in the beginning and 266.9 MB in the end (delta: -171.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-20 00:15:46,672 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 00:15:46,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1480.73 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 94.7 MB in the beginning and 174.5 MB in the end (delta: -79.8 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-20 00:15:46,674 INFO L168 Benchmark]: Boogie Preprocessor took 129.16 ms. Allocated memory is still 235.9 MB. Free memory was 174.5 MB in the beginning and 170.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-20 00:15:46,675 INFO L168 Benchmark]: RCFGBuilder took 887.35 ms. Allocated memory is still 235.9 MB. Free memory was 170.6 MB in the beginning and 115.3 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-07-20 00:15:46,676 INFO L168 Benchmark]: TraceAbstraction took 4556.67 ms. Allocated memory was 235.9 MB in the beginning and 325.6 MB in the end (delta: 89.7 MB). Free memory was 115.3 MB in the beginning and 266.9 MB in the end (delta: -151.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 00:15:46,681 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1480.73 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 94.7 MB in the beginning and 174.5 MB in the end (delta: -79.8 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.16 ms. Allocated memory is still 235.9 MB. Free memory was 174.5 MB in the beginning and 170.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 887.35 ms. Allocated memory is still 235.9 MB. Free memory was 170.6 MB in the beginning and 115.3 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4556.67 ms. Allocated memory was 235.9 MB in the beginning and 325.6 MB in the end (delta: 89.7 MB). Free memory was 115.3 MB in the beginning and 266.9 MB in the end (delta: -151.7 MB). There was no memory consumed. 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...