/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 22:40:44,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:40:44,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:40:44,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:40:44,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:40:44,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:40:44,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:40:44,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:40:44,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:40:44,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:40:44,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:40:44,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:40:44,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:40:44,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:40:44,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:40:44,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:40:44,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:40:44,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:40:44,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:40:44,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:40:44,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:40:44,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:40:44,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:40:44,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:40:44,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:40:44,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:40:44,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:40:44,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:40:44,239 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 22:40:44,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:40:44,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:40:44,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:40:44,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:40:44,261 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:40:44,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:40:44,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:40:44,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:40:44,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:40:44,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:40:44,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:40:44,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:40:44,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:40:44,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:40:44,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:40:44,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:40:44,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:40:44,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:40:44,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:40:44,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:40:44,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:40:44,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:40:44,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:40:44,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:40:44,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:40:44,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:40:44,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:44,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:40:44,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:40:44,266 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 22:40:44,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:40:44,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:40:44,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:40:44,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:40:44,766 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:40:44,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 22:40:44,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f2f6ba7/f15625cf406648a0b51e3e30fc58d2da/FLAG7d3e957cf [2020-07-21 22:40:45,618 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:40:45,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 22:40:45,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f2f6ba7/f15625cf406648a0b51e3e30fc58d2da/FLAG7d3e957cf [2020-07-21 22:40:45,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f2f6ba7/f15625cf406648a0b51e3e30fc58d2da [2020-07-21 22:40:45,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:40:45,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:40:45,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:40:45,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:40:45,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:40:45,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:45" (1/1) ... [2020-07-21 22:40:45,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bb362f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:45, skipping insertion in model container [2020-07-21 22:40:45,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:45" (1/1) ... [2020-07-21 22:40:45,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:40:45,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:40:46,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:40:46,354 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:40:46,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:40:46,407 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:40:46,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46 WrapperNode [2020-07-21 22:40:46,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:40:46,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:40:46,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:40:46,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:40:46,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (1/1) ... [2020-07-21 22:40:46,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:40:46,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:40:46,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:40:46,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:40:46,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (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 22:40:46,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:40:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:40:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 22:40:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 22:40:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 22:40:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-21 22:40:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-21 22:40:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-21 22:40:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-21 22:40:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-21 22:40:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-21 22:40:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:40:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:40:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 22:40:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:40:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 22:40:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 22:40:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-21 22:40:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-21 22:40:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-21 22:40:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-21 22:40:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-21 22:40:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-21 22:40:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:40:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:40:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:40:47,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:40:47,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:40:47,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:47 BoogieIcfgContainer [2020-07-21 22:40:47,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:40:47,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:40:47,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:40:47,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:40:47,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:40:45" (1/3) ... [2020-07-21 22:40:47,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ac90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:47, skipping insertion in model container [2020-07-21 22:40:47,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:46" (2/3) ... [2020-07-21 22:40:47,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ac90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:47, skipping insertion in model container [2020-07-21 22:40:47,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:47" (3/3) ... [2020-07-21 22:40:47,205 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-21 22:40:47,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:40:47,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:40:47,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:40:47,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:40:47,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:40:47,292 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:40:47,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:40:47,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:40:47,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:40:47,293 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:40:47,293 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:40:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 22:40:47,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 22:40:47,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:47,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:40:47,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-21 22:40:47,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:47,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480076084] [2020-07-21 22:40:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:47,487 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:40:47,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:40:47,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:40:47,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:40:47,535 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 22:40:47,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:40:47,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480076084] [2020-07-21 22:40:47,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:40:47,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:40:47,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794827322] [2020-07-21 22:40:47,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:40:47,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:40:47,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:40:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:40:47,575 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 22:40:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:40:47,634 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2020-07-21 22:40:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:40:47,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-21 22:40:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:40:47,656 INFO L225 Difference]: With dead ends: 135 [2020-07-21 22:40:47,657 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 22:40:47,664 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 22:40:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 22:40:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-21 22:40:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 22:40:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-21 22:40:47,743 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-21 22:40:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:40:47,744 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-21 22:40:47,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:40:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-21 22:40:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 22:40:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:47,746 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 22:40:47,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:47,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-21 22:40:47,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:47,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294342785] [2020-07-21 22:40:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:48,029 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:40:48,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:40:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:40:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:40:48,084 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 22:40:48,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:40:48,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294342785] [2020-07-21 22:40:48,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:40:48,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:40:48,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341330826] [2020-07-21 22:40:48,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:40:48,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:40:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:40:48,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:40:48,092 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 3 states. [2020-07-21 22:40:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:40:48,158 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2020-07-21 22:40:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:40:48,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-21 22:40:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:40:48,167 INFO L225 Difference]: With dead ends: 108 [2020-07-21 22:40:48,169 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 22:40:48,172 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 22:40:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 22:40:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 22:40:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 22:40:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-21 22:40:48,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-21 22:40:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:40:48,210 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-21 22:40:48,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:40:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-21 22:40:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 22:40:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:48,213 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 22:40:48,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:48,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:48,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:48,421 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-21 22:40:48,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:48,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747908337] [2020-07-21 22:40:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:48,491 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:40:48,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:40:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 22:40:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:40:48,535 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 22:40:48,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:40:48,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747908337] [2020-07-21 22:40:48,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:40:48,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:40:48,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329764041] [2020-07-21 22:40:48,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:40:48,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:40:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:40:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:40:48,541 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 3 states. [2020-07-21 22:40:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:40:48,657 INFO L93 Difference]: Finished difference Result 218 states and 297 transitions. [2020-07-21 22:40:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:40:48,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 22:40:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:40:48,662 INFO L225 Difference]: With dead ends: 218 [2020-07-21 22:40:48,662 INFO L226 Difference]: Without dead ends: 127 [2020-07-21 22:40:48,665 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 22:40:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-21 22:40:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-07-21 22:40:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 22:40:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-21 22:40:48,697 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-21 22:40:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:40:48,698 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-21 22:40:48,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:40:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-21 22:40:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 22:40:48,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:48,701 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 22:40:48,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:48,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:48,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-21 22:40:48,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:48,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308468535] [2020-07-21 22:40:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:49,068 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:40:49,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:40:49,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 22:40:49,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:40:49,125 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 22:40:49,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:40:49,216 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 22:40:49,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308468535] [2020-07-21 22:40:49,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:40:49,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 22:40:49,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749133430] [2020-07-21 22:40:49,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:40:49,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:40:49,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:40:49,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:40:49,222 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 5 states. [2020-07-21 22:40:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:40:49,429 INFO L93 Difference]: Finished difference Result 316 states and 459 transitions. [2020-07-21 22:40:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:40:49,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-07-21 22:40:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:40:49,434 INFO L225 Difference]: With dead ends: 316 [2020-07-21 22:40:49,435 INFO L226 Difference]: Without dead ends: 201 [2020-07-21 22:40:49,438 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 22:40:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-21 22:40:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2020-07-21 22:40:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-21 22:40:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-07-21 22:40:49,470 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 40 [2020-07-21 22:40:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:40:49,471 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-07-21 22:40:49,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:40:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-07-21 22:40:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 22:40:49,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:49,476 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 22:40:49,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:49,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:49,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-21 22:40:49,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:49,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700938876] [2020-07-21 22:40:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:49,776 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:40:49,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:40:49,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:40:49,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:40:49,811 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 22:40:49,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:40:49,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700938876] [2020-07-21 22:40:49,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:40:49,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:40:49,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599419524] [2020-07-21 22:40:49,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:40:49,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:40:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:40:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:40:49,816 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 3 states. [2020-07-21 22:40:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:40:49,846 INFO L93 Difference]: Finished difference Result 261 states and 372 transitions. [2020-07-21 22:40:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:40:49,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-07-21 22:40:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:40:49,849 INFO L225 Difference]: With dead ends: 261 [2020-07-21 22:40:49,850 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 22:40:49,852 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 22:40:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 22:40:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 22:40:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 22:40:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-07-21 22:40:49,871 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-07-21 22:40:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:40:49,872 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-07-21 22:40:49,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:40:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-07-21 22:40:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 22:40:49,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:40:49,882 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 22:40:50,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:50,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:40:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:40:50,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-21 22:40:50,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:40:50,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731185857] [2020-07-21 22:40:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:40:50,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:40:50,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:40:50,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:40:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:40:50,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:40:50,255 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:40:50,255 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:40:50,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:40:50,513 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 22:40:50,515 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 22:40:50,517 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 22:40:50,517 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 22:40:50,518 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 22:40:50,519 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 22:40:50,519 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 22:40:50,520 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 22:40:50,521 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 22:40:50,521 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 22:40:50,522 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 22:40:50,522 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 22:40:50,523 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 22:40:50,524 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 22:40:50,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:40:50 BoogieIcfgContainer [2020-07-21 22:40:50,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:40:50,559 INFO L168 Benchmark]: Toolchain (without parser) took 4637.97 ms. Allocated memory was 136.3 MB in the beginning and 230.2 MB in the end (delta: 93.8 MB). Free memory was 101.0 MB in the beginning and 146.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,560 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.36 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,564 INFO L168 Benchmark]: Boogie Preprocessor took 182.33 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 90.2 MB in the beginning and 180.2 MB in the end (delta: -89.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,565 INFO L168 Benchmark]: RCFGBuilder took 597.56 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 160.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,566 INFO L168 Benchmark]: TraceAbstraction took 3357.56 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 159.4 MB in the beginning and 146.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:40:50,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.36 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.33 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 90.2 MB in the beginning and 180.2 MB in the end (delta: -89.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 597.56 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 160.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3357.56 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 159.4 MB in the beginning and 146.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 41.3 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)=4, \old(open_called)=5, 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.5s, 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, 0.2s 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, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 228 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 12063 SizeOfPredicates, 4 NumberOfNonLiveVariables, 428 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...