/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:00:06,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:00:06,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:00:06,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:00:06,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:00:06,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:00:06,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:00:06,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:00:06,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:00:06,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:00:06,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:00:06,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:00:06,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:00:06,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:00:06,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:00:06,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:00:06,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:00:06,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:00:06,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:00:06,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:00:06,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:00:06,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:00:06,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:00:06,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:00:06,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:00:06,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:00:06,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:00:06,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:00:06,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:00:06,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:00:06,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:00:06,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:00:06,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:00:06,103 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:00:06,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:00:06,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:00:06,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:00:06,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:00:06,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:00:06,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:00:06,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:00:06,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:00:06,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:00:06,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:00:06,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:00:06,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:00:06,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:00:06,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:00:06,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:00:06,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:00:06,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:00:06,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:00:06,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:00:06,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:00:06,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:00:06,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:06,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:00:06,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:00:06,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 -> 2 [2020-07-21 20:00:06,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:00:06,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:00:06,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:00:06,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:00:06,482 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:00:06,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 20:00:06,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db0a3a7/a85e13c594d54e2f9615749fca52e582/FLAGfb2b816cc [2020-07-21 20:00:07,122 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:00:07,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 20:00:07,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db0a3a7/a85e13c594d54e2f9615749fca52e582/FLAGfb2b816cc [2020-07-21 20:00:07,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db0a3a7/a85e13c594d54e2f9615749fca52e582 [2020-07-21 20:00:07,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:00:07,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:00:07,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:07,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:00:07,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:00:07,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a09e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07, skipping insertion in model container [2020-07-21 20:00:07,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:00:07,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:00:07,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:07,784 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:00:07,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:07,826 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:00:07,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07 WrapperNode [2020-07-21 20:00:07,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:07,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:00:07,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:00:07,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:00:07,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (1/1) ... [2020-07-21 20:00:07,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:00:07,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:00:07,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:00:07,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:00:07,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (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 [2020-07-21 20:00:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:00:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-21 20:00:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-21 20:00:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-21 20:00:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-21 20:00:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-21 20:00:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:00:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-21 20:00:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-21 20:00:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-21 20:00:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-21 20:00:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-21 20:00:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-21 20:00:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:00:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:00:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:00:08,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:00:08,415 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:00:08,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:08 BoogieIcfgContainer [2020-07-21 20:00:08,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:00:08,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:00:08,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:00:08,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:00:08,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:00:07" (1/3) ... [2020-07-21 20:00:08,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:08, skipping insertion in model container [2020-07-21 20:00:08,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:07" (2/3) ... [2020-07-21 20:00:08,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:08, skipping insertion in model container [2020-07-21 20:00:08,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:08" (3/3) ... [2020-07-21 20:00:08,430 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-21 20:00:08,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:00:08,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:00:08,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:00:08,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:00:08,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:00:08,489 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:00:08,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:00:08,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:00:08,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:00:08,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:00:08,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:00:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 20:00:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:00:08,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:08,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:08,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-21 20:00:08,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:08,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547506343] [2020-07-21 20:00:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:08,615 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:08,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:08,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 20:00:08,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:08,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:08,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547506343] [2020-07-21 20:00:08,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:08,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 20:00:08,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381913824] [2020-07-21 20:00:08,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 20:00:08,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:08,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 20:00:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:00:08,668 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 20:00:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:08,703 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2020-07-21 20:00:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 20:00:08,705 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-21 20:00:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:08,715 INFO L225 Difference]: With dead ends: 135 [2020-07-21 20:00:08,716 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 20:00:08,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:00:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 20:00:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-21 20:00:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 20:00:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-21 20:00:08,773 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-21 20:00:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:08,773 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-21 20:00:08,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 20:00:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-21 20:00:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 20:00:08,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:08,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:08,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:08,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-21 20:00:08,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:08,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418622690] [2020-07-21 20:00:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:09,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:00:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:09,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:09,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418622690] [2020-07-21 20:00:09,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:09,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:00:09,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149396258] [2020-07-21 20:00:09,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:00:09,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:00:09,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:09,085 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 3 states. [2020-07-21 20:00:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:09,161 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2020-07-21 20:00:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:00:09,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-21 20:00:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:09,167 INFO L225 Difference]: With dead ends: 108 [2020-07-21 20:00:09,168 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 20:00:09,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 20:00:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 20:00:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 20:00:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-21 20:00:09,210 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-21 20:00:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:09,210 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-21 20:00:09,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:00:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-21 20:00:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 20:00:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:09,212 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] [2020-07-21 20:00:09,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:09,414 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-21 20:00:09,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:09,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79683001] [2020-07-21 20:00:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:09,458 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:00:09,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:09,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 20:00:09,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:09,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:09,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79683001] [2020-07-21 20:00:09,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:09,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:00:09,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829952869] [2020-07-21 20:00:09,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:00:09,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:00:09,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:09,497 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 3 states. [2020-07-21 20:00:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:09,555 INFO L93 Difference]: Finished difference Result 218 states and 297 transitions. [2020-07-21 20:00:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:00:09,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 20:00:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:09,559 INFO L225 Difference]: With dead ends: 218 [2020-07-21 20:00:09,559 INFO L226 Difference]: Without dead ends: 127 [2020-07-21 20:00:09,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-21 20:00:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-07-21 20:00:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 20:00:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-21 20:00:09,594 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-21 20:00:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:09,595 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-21 20:00:09,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:00:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-21 20:00:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 20:00:09,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:09,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:09,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:09,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:09,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:09,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-21 20:00:09,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:09,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333100442] [2020-07-21 20:00:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:09,849 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:00:09,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:09,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 20:00:09,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:09,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:00:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:09,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333100442] [2020-07-21 20:00:09,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:00:09,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 20:00:09,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711388707] [2020-07-21 20:00:09,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:00:09,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:00:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:00:09,987 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 5 states. [2020-07-21 20:00:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:10,123 INFO L93 Difference]: Finished difference Result 316 states and 459 transitions. [2020-07-21 20:00:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:00:10,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-07-21 20:00:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:10,127 INFO L225 Difference]: With dead ends: 316 [2020-07-21 20:00:10,127 INFO L226 Difference]: Without dead ends: 201 [2020-07-21 20:00:10,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:00:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-21 20:00:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2020-07-21 20:00:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-21 20:00:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-07-21 20:00:10,165 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 40 [2020-07-21 20:00:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:10,166 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-07-21 20:00:10,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:00:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-07-21 20:00:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 20:00:10,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:10,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-07-21 20:00:10,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:10,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-21 20:00:10,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:10,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025709760] [2020-07-21 20:00:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:10,485 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:10,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:00:10,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 20:00:10,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:10,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025709760] [2020-07-21 20:00:10,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:10,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:00:10,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770664647] [2020-07-21 20:00:10,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:00:10,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:00:10,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:10,522 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 3 states. [2020-07-21 20:00:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:10,541 INFO L93 Difference]: Finished difference Result 261 states and 372 transitions. [2020-07-21 20:00:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:00:10,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-07-21 20:00:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:10,544 INFO L225 Difference]: With dead ends: 261 [2020-07-21 20:00:10,544 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 20:00:10,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:00:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 20:00:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 20:00:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 20:00:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-07-21 20:00:10,557 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-07-21 20:00:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:10,557 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-07-21 20:00:10,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:00:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-07-21 20:00:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 20:00:10,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:10,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-07-21 20:00:10,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:10,774 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-21 20:00:10,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:10,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972860199] [2020-07-21 20:00:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:10,853 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:10,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:00:10,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:00:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:00:10,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:00:10,956 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:00:10,956 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:00:11,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:11,205 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,207 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,207 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,208 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,208 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,209 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,209 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,210 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,210 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,211 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,211 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,212 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,212 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,213 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-21 20:00:11,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:00:11 BoogieIcfgContainer [2020-07-21 20:00:11,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:00:11,232 INFO L168 Benchmark]: Toolchain (without parser) took 3681.27 ms. Allocated memory was 140.5 MB in the beginning and 229.1 MB in the end (delta: 88.6 MB). Free memory was 99.9 MB in the beginning and 148.4 MB in the end (delta: -48.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,233 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 140.5 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.39 ms. Allocated memory is still 140.5 MB. Free memory was 99.7 MB in the beginning and 89.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,235 INFO L168 Benchmark]: Boogie Preprocessor took 142.81 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 89.5 MB in the beginning and 178.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,236 INFO L168 Benchmark]: RCFGBuilder took 449.94 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 158.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,237 INFO L168 Benchmark]: TraceAbstraction took 2806.88 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 158.8 MB in the beginning and 148.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:11,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 140.5 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.39 ms. Allocated memory is still 140.5 MB. Free memory was 99.7 MB in the beginning and 89.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.81 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 89.5 MB in the beginning and 178.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.94 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 158.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2806.88 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 158.8 MB in the beginning and 148.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 388 SDtfs, 146 SDslu, 277 SDs, 0 SdLazy, 55 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 228 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 12063 SizeOfPredicates, 4 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 25/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...