/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:18:02,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:18:02,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:18:02,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:18:02,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:18:02,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:18:02,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:18:02,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:18:02,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:18:02,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:18:02,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:18:02,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:18:02,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:18:02,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:18:02,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:18:02,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:18:02,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:18:02,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:18:02,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:18:02,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:18:02,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:18:02,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:18:02,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:18:02,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:18:02,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:18:02,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:18:02,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:18:02,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:18:02,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:18:02,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:18:02,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:18:02,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:18:02,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:18:02,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:18:02,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:18:02,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:18:02,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:18:02,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:18:02,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:18:02,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:18:02,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:18:02,364 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 [2020-07-07 11:18:02,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:18:02,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:18:02,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:18:02,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:18:02,379 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:18:02,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:18:02,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:18:02,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:18:02,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:18:02,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:18:02,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:18:02,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:18:02,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:18:02,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:18:02,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:18:02,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:18:02,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:18:02,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:18:02,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:18:02,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:18:02,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:18:02,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:18:02,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:18:02,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:18:02,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:18:02,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:18:02,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:18:02,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:18:02,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:18:02,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:18:02,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:18:02,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:18:02,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:18:02,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:18:02,686 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:18:02,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-07 11:18:02,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe281e758/8dc87f78d9e640cdb9f55c1ca4100786/FLAG31bbad930 [2020-07-07 11:18:03,160 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:18:03,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-07 11:18:03,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe281e758/8dc87f78d9e640cdb9f55c1ca4100786/FLAG31bbad930 [2020-07-07 11:18:03,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe281e758/8dc87f78d9e640cdb9f55c1ca4100786 [2020-07-07 11:18:03,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:18:03,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:18:03,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:18:03,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:18:03,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:18:03,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:03,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f04785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03, skipping insertion in model container [2020-07-07 11:18:03,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:03,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:18:03,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:18:03,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:18:03,824 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:18:03,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:18:03,892 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:18:03,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03 WrapperNode [2020-07-07 11:18:03,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:18:03,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:18:03,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:18:03,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:18:03,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:03,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (1/1) ... [2020-07-07 11:18:04,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:18:04,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:18:04,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:18:04,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:18:04,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (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 [2020-07-07 11:18:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:18:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-07 11:18:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-07 11:18:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-07 11:18:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-07 11:18:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-07 11:18:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:18:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:18:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 11:18:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:18:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-07 11:18:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-07 11:18:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-07 11:18:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-07 11:18:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-07 11:18:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-07 11:18:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-07 11:18:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-07 11:18:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:18:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:18:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:18:04,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:18:04,615 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:18:04,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:18:04 BoogieIcfgContainer [2020-07-07 11:18:04,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:18:04,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:18:04,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:18:04,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:18:04,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:18:03" (1/3) ... [2020-07-07 11:18:04,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb82d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:18:04, skipping insertion in model container [2020-07-07 11:18:04,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:03" (2/3) ... [2020-07-07 11:18:04,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb82d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:18:04, skipping insertion in model container [2020-07-07 11:18:04,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:18:04" (3/3) ... [2020-07-07 11:18:04,629 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-07 11:18:04,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:18:04,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:18:04,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:18:04,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:18:04,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:18:04,682 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:18:04,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:18:04,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:18:04,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:18:04,682 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:18:04,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:18:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-07 11:18:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:18:04,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:04,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:04,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-07 11:18:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:04,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381906627] [2020-07-07 11:18:04,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:04,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381906627] [2020-07-07 11:18:04,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:04,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:18:04,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445265316] [2020-07-07 11:18:04,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:18:04,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:04,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:18:04,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:18:04,940 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-07 11:18:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:05,133 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-07-07 11:18:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:18:05,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-07 11:18:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:05,150 INFO L225 Difference]: With dead ends: 140 [2020-07-07 11:18:05,151 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 11:18:05,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:18:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 11:18:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-07 11:18:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-07 11:18:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-07 11:18:05,251 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-07 11:18:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:05,252 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-07 11:18:05,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:18:05,253 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-07 11:18:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:18:05,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:05,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:05,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:18:05,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-07 11:18:05,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:05,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659914082] [2020-07-07 11:18:05,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:05,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659914082] [2020-07-07 11:18:05,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:05,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:18:05,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323352534] [2020-07-07 11:18:05,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:18:05,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:05,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:18:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:18:05,405 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-07-07 11:18:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:05,653 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-07-07 11:18:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:18:05,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-07 11:18:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:05,657 INFO L225 Difference]: With dead ends: 112 [2020-07-07 11:18:05,657 INFO L226 Difference]: Without dead ends: 106 [2020-07-07 11:18:05,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:18:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-07 11:18:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-07-07 11:18:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-07 11:18:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-07 11:18:05,685 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-07 11:18:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:05,686 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-07 11:18:05,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:18:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-07 11:18:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 11:18:05,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:05,688 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] [2020-07-07 11:18:05,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:18:05,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:05,689 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-07 11:18:05,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:05,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444828450] [2020-07-07 11:18:05,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:05,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444828450] [2020-07-07 11:18:05,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:05,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:18:05,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962389316] [2020-07-07 11:18:05,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:18:05,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:18:05,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:18:05,825 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-07-07 11:18:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:06,083 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-07-07 11:18:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:18:06,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-07 11:18:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:06,086 INFO L225 Difference]: With dead ends: 253 [2020-07-07 11:18:06,087 INFO L226 Difference]: Without dead ends: 162 [2020-07-07 11:18:06,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:18:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-07 11:18:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-07-07 11:18:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-07 11:18:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-07 11:18:06,113 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-07 11:18:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:06,113 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-07 11:18:06,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:18:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-07 11:18:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 11:18:06,115 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:06,115 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] [2020-07-07 11:18:06,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:18:06,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:06,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-07 11:18:06,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:06,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74749415] [2020-07-07 11:18:06,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:06,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74749415] [2020-07-07 11:18:06,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032208992] [2020-07-07 11:18:06,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,273 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:18:06,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:06,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:18:06,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 8 [2020-07-07 11:18:06,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180100313] [2020-07-07 11:18:06,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:18:06,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:06,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:18:06,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:18:06,315 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 8 states. [2020-07-07 11:18:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:06,644 INFO L93 Difference]: Finished difference Result 351 states and 514 transitions. [2020-07-07 11:18:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:18:06,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-07-07 11:18:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:06,648 INFO L225 Difference]: With dead ends: 351 [2020-07-07 11:18:06,648 INFO L226 Difference]: Without dead ends: 236 [2020-07-07 11:18:06,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:18:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-07-07 11:18:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 174. [2020-07-07 11:18:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-07 11:18:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 243 transitions. [2020-07-07 11:18:06,678 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 243 transitions. Word has length 40 [2020-07-07 11:18:06,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:06,679 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 243 transitions. [2020-07-07 11:18:06,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:18:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 243 transitions. [2020-07-07 11:18:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 11:18:06,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:06,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2020-07-07 11:18:06,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:06,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-07-07 11:18:06,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:06,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807447180] [2020-07-07 11:18:06,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:07,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807447180] [2020-07-07 11:18:07,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638418488] [2020-07-07 11:18:07,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,097 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:18:07,100 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:18:07,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:18:07,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2020-07-07 11:18:07,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568660941] [2020-07-07 11:18:07,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:18:07,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:07,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:18:07,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:18:07,114 INFO L87 Difference]: Start difference. First operand 174 states and 243 transitions. Second operand 4 states. [2020-07-07 11:18:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:07,183 INFO L93 Difference]: Finished difference Result 435 states and 639 transitions. [2020-07-07 11:18:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:18:07,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-07 11:18:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:07,189 INFO L225 Difference]: With dead ends: 435 [2020-07-07 11:18:07,189 INFO L226 Difference]: Without dead ends: 272 [2020-07-07 11:18:07,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:18:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-07-07 11:18:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 222. [2020-07-07 11:18:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-07 11:18:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 323 transitions. [2020-07-07 11:18:07,247 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 323 transitions. Word has length 51 [2020-07-07 11:18:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:07,247 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 323 transitions. [2020-07-07 11:18:07,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:18:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 323 transitions. [2020-07-07 11:18:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 11:18:07,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:07,253 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] [2020-07-07 11:18:07,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:07,473 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-07 11:18:07,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:07,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018505759] [2020-07-07 11:18:07,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-07 11:18:07,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018505759] [2020-07-07 11:18:07,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:07,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:18:07,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190465681] [2020-07-07 11:18:07,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:18:07,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:18:07,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:18:07,560 INFO L87 Difference]: Start difference. First operand 222 states and 323 transitions. Second operand 6 states. [2020-07-07 11:18:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:07,716 INFO L93 Difference]: Finished difference Result 414 states and 611 transitions. [2020-07-07 11:18:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:18:07,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-07 11:18:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:07,723 INFO L225 Difference]: With dead ends: 414 [2020-07-07 11:18:07,723 INFO L226 Difference]: Without dead ends: 203 [2020-07-07 11:18:07,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:18:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-07 11:18:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 122. [2020-07-07 11:18:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-07 11:18:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2020-07-07 11:18:07,739 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 63 [2020-07-07 11:18:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:07,741 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2020-07-07 11:18:07,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:18:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2020-07-07 11:18:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 11:18:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:07,748 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] [2020-07-07 11:18:07,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:18:07,749 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:07,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-07 11:18:07,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:07,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133671880] [2020-07-07 11:18:07,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:18:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:18:07,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:18:07,854 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:18:07,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:18:07,896 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 [2020-07-07 11:18:07,897 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 [2020-07-07 11:18:07,898 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 [2020-07-07 11:18:07,901 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 [2020-07-07 11:18:07,901 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 [2020-07-07 11:18:07,902 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 [2020-07-07 11:18:07,902 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 [2020-07-07 11:18:07,903 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 [2020-07-07 11:18:07,903 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 [2020-07-07 11:18:07,903 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 [2020-07-07 11:18:07,911 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 [2020-07-07 11:18:07,912 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 [2020-07-07 11:18:07,912 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 [2020-07-07 11:18:07,912 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 [2020-07-07 11:18:07,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:18:07 BoogieIcfgContainer [2020-07-07 11:18:07,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:18:07,927 INFO L168 Benchmark]: Toolchain (without parser) took 4343.66 ms. Allocated memory was 144.2 MB in the beginning and 245.9 MB in the end (delta: 101.7 MB). Free memory was 102.5 MB in the beginning and 139.6 MB in the end (delta: -37.1 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,927 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.92 ms. Allocated memory is still 144.2 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,929 INFO L168 Benchmark]: Boogie Preprocessor took 210.42 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 92.0 MB in the beginning and 183.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,930 INFO L168 Benchmark]: RCFGBuilder took 516.13 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 163.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,931 INFO L168 Benchmark]: TraceAbstraction took 3302.97 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 162.6 MB in the beginning and 139.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:07,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.92 ms. Allocated memory is still 144.2 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.42 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 92.0 MB in the beginning and 183.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.13 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 163.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3302.97 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 162.6 MB in the beginning and 139.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 482 SDslu, 710 SDs, 0 SdLazy, 522 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 238 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 22707 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 36/53 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...