/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 NUM_VARIABLES --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 16:19:12,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:19:12,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:19:12,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:19:12,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:19:12,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:19:12,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:19:12,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:19:12,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:19:12,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:19:12,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:19:12,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:19:12,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:19:12,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:19:12,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:19:12,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:19:12,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:19:12,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:19:12,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:19:12,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:19:12,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:19:12,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:19:12,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:19:12,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:19:12,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:19:12,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:19:12,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:19:12,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:19:12,295 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 16:19:12,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:19:12,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:19:12,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:19:12,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:19:12,317 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:19:12,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:19:12,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:19:12,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:19:12,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:19:12,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:19:12,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:19:12,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:19:12,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:19:12,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:19:12,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:19:12,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:19:12,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:19:12,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:19:12,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:19:12,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:19:12,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:19:12,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:19:12,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:19:12,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:19:12,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:19:12,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:19:12,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:12,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:19:12,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:19:12,323 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 -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:19:12,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:19:12,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:19:12,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:19:12,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:19:12,739 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:19:12,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 16:19:12,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593ae9407/bf327bc0db544f479beffccb8b26b35e/FLAG857b2694a [2020-07-21 16:19:13,427 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:19:13,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-21 16:19:13,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593ae9407/bf327bc0db544f479beffccb8b26b35e/FLAG857b2694a [2020-07-21 16:19:13,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593ae9407/bf327bc0db544f479beffccb8b26b35e [2020-07-21 16:19:13,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:19:13,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:19:13,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:19:13,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:19:13,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:19:13,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:19:13" (1/1) ... [2020-07-21 16:19:13,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d47ec07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:13, skipping insertion in model container [2020-07-21 16:19:13,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:19:13" (1/1) ... [2020-07-21 16:19:13,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:19:13,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:19:14,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:19:14,091 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:19:14,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:19:14,143 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:19:14,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14 WrapperNode [2020-07-21 16:19:14,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:19:14,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:19:14,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:19:14,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:19:14,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (1/1) ... [2020-07-21 16:19:14,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:19:14,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:19:14,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:19:14,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:19:14,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (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 16:19:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:19:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:19:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 16:19:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 16:19:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 16:19:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-21 16:19:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-21 16:19:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-21 16:19:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-21 16:19:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-21 16:19:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-21 16:19:14,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 16:19:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-21 16:19:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-21 16:19:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-21 16:19:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-21 16:19:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-21 16:19:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-21 16:19:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:19:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:19:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:19:14,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:19:14,877 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:19:14,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:19:14 BoogieIcfgContainer [2020-07-21 16:19:14,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:19:14,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:19:14,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:19:14,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:19:14,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:19:13" (1/3) ... [2020-07-21 16:19:14,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:19:14, skipping insertion in model container [2020-07-21 16:19:14,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:14" (2/3) ... [2020-07-21 16:19:14,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:19:14, skipping insertion in model container [2020-07-21 16:19:14,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:19:14" (3/3) ... [2020-07-21 16:19:14,896 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-21 16:19:14,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:19:14,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:19:14,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:19:14,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:19:14,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:19:14,964 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:19:14,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:19:14,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:19:14,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:19:14,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:19:14,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:19:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 16:19:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 16:19:14,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:14,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:19:14,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-21 16:19:15,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:15,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453040602] [2020-07-21 16:19:15,013 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 16:19:15,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:15,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:15,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:19:15,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:15,140 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 16:19:15,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:19:15,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453040602] [2020-07-21 16:19:15,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:19:15,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:19:15,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843631667] [2020-07-21 16:19:15,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:19:15,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:19:15,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:19:15,169 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 16:19:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:15,213 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2020-07-21 16:19:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:19:15,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-21 16:19:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:15,228 INFO L225 Difference]: With dead ends: 135 [2020-07-21 16:19:15,228 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 16:19:15,234 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 16:19:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 16:19:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-21 16:19:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 16:19:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-21 16:19:15,303 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-21 16:19:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:15,304 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-21 16:19:15,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:19:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-21 16:19:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 16:19:15,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:15,307 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 16:19:15,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:15,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:15,523 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-21 16:19:15,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:15,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196781843] [2020-07-21 16:19:15,524 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 16:19:15,571 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:15,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:15,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:19:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:15,617 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 16:19:15,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:19:15,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196781843] [2020-07-21 16:19:15,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:19:15,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:19:15,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858701412] [2020-07-21 16:19:15,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:19:15,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:15,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:19:15,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:19:15,623 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 3 states. [2020-07-21 16:19:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:15,679 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2020-07-21 16:19:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:19:15,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-21 16:19:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:15,686 INFO L225 Difference]: With dead ends: 108 [2020-07-21 16:19:15,686 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 16:19:15,688 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 16:19:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 16:19:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 16:19:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 16:19:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-21 16:19:15,715 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-21 16:19:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:15,716 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-21 16:19:15,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:19:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-21 16:19:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 16:19:15,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:15,718 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 16:19:15,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:15,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-21 16:19:15,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:15,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896859788] [2020-07-21 16:19:15,934 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 16:19:16,026 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:16,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:19:16,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:16,089 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 16:19:16,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:19:16,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896859788] [2020-07-21 16:19:16,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:19:16,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:19:16,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672333260] [2020-07-21 16:19:16,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:19:16,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:19:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:19:16,097 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 3 states. [2020-07-21 16:19:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:16,190 INFO L93 Difference]: Finished difference Result 218 states and 297 transitions. [2020-07-21 16:19:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:19:16,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 16:19:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:16,193 INFO L225 Difference]: With dead ends: 218 [2020-07-21 16:19:16,194 INFO L226 Difference]: Without dead ends: 127 [2020-07-21 16:19:16,196 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 16:19:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-21 16:19:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-07-21 16:19:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 16:19:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-21 16:19:16,221 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-21 16:19:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:16,222 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-21 16:19:16,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:19:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-21 16:19:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 16:19:16,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:16,225 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 16:19:16,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:16,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-21 16:19:16,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:16,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567902883] [2020-07-21 16:19:16,442 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 16:19:16,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:16,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:16,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:19:16,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:16,623 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 16:19:16,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:19:16,718 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 16:19:16,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567902883] [2020-07-21 16:19:16,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:19:16,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 16:19:16,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258490499] [2020-07-21 16:19:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:19:16,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:19:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:19:16,722 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 5 states. [2020-07-21 16:19:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:16,860 INFO L93 Difference]: Finished difference Result 316 states and 459 transitions. [2020-07-21 16:19:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:19:16,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-07-21 16:19:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:16,864 INFO L225 Difference]: With dead ends: 316 [2020-07-21 16:19:16,865 INFO L226 Difference]: Without dead ends: 201 [2020-07-21 16:19:16,867 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 16:19:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-21 16:19:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2020-07-21 16:19:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-21 16:19:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-07-21 16:19:16,892 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 40 [2020-07-21 16:19:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:16,893 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-07-21 16:19:16,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:19:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-07-21 16:19:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 16:19:16,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:16,896 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 16:19:17,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:17,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-21 16:19:17,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:17,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55580269] [2020-07-21 16:19:17,114 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 16:19:17,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:17,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:17,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:19:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:17,220 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 16:19:17,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:19:17,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55580269] [2020-07-21 16:19:17,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:19:17,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:19:17,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944423026] [2020-07-21 16:19:17,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:19:17,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:19:17,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:19:17,224 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 3 states. [2020-07-21 16:19:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:17,252 INFO L93 Difference]: Finished difference Result 261 states and 372 transitions. [2020-07-21 16:19:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:19:17,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-07-21 16:19:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:17,256 INFO L225 Difference]: With dead ends: 261 [2020-07-21 16:19:17,256 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 16:19:17,258 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 16:19:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 16:19:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 16:19:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 16:19:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-07-21 16:19:17,274 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-07-21 16:19:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:17,274 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-07-21 16:19:17,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:19:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-07-21 16:19:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 16:19:17,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:17,278 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 16:19:17,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:17,492 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-21 16:19:17,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:17,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95863348] [2020-07-21 16:19:17,493 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 16:19:17,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:17,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:19:17,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:19:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:19:17,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:19:17,631 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:19:17,632 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:19:17,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:17,886 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 16:19:17,888 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 16:19:17,889 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 16:19:17,889 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 16:19:17,890 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 16:19:17,891 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 16:19:17,891 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 16:19:17,892 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 16:19:17,893 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 16:19:17,893 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 16:19:17,899 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 16:19:17,900 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 16:19:17,900 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 16:19:17,901 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 16:19:17,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:19:17 BoogieIcfgContainer [2020-07-21 16:19:17,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:19:17,948 INFO L168 Benchmark]: Toolchain (without parser) took 4205.45 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.4 MB in the beginning and 146.1 MB in the end (delta: -44.7 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:17,949 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:19:17,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.98 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 91.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:17,955 INFO L168 Benchmark]: Boogie Preprocessor took 158.63 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 180.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:17,956 INFO L168 Benchmark]: RCFGBuilder took 580.01 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 160.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:17,961 INFO L168 Benchmark]: TraceAbstraction took 3050.13 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 159.8 MB in the beginning and 146.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:17,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 407.98 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 91.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.63 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 180.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.01 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 160.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3050.13 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 159.8 MB in the beginning and 146.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 45.2 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)=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: 2.8s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, 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, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 12063 SizeOfPredicates, 4 NumberOfNonLiveVariables, 473 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...