/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:28:37,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:28:37,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:28:37,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:28:37,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:28:37,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:28:37,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:28:37,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:28:37,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:28:37,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:28:37,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:28:37,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:28:37,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:28:37,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:28:37,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:28:37,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:28:37,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:28:37,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:28:37,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:28:37,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:28:37,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:28:37,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:28:37,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:28:37,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:28:37,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:28:37,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:28:37,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:28:37,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:28:37,424 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 [2020-07-20 01:28:37,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:28:37,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:28:37,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:28:37,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:28:37,440 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:28:37,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:28:37,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:28:37,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:28:37,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:28:37,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:28:37,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:28:37,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:28:37,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:28:37,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:28:37,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:28:37,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:28:37,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:28:37,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:28:37,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:28:37,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:28:37,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:28:37,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:28:37,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:28:37,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:28:37,747 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:28:37,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-20 01:28:37,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32c5b88d/7464b060734f405fb39a0378e7edfa2c/FLAG690b87ada [2020-07-20 01:28:38,294 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:28:38,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-20 01:28:38,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32c5b88d/7464b060734f405fb39a0378e7edfa2c/FLAG690b87ada [2020-07-20 01:28:38,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32c5b88d/7464b060734f405fb39a0378e7edfa2c [2020-07-20 01:28:38,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:28:38,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:28:38,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:28:38,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:28:38,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:28:38,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:38,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e510dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38, skipping insertion in model container [2020-07-20 01:28:38,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:38,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:28:38,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:28:38,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:28:38,939 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:28:38,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:28:38,972 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:28:38,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38 WrapperNode [2020-07-20 01:28:38,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:28:38,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:28:38,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:28:38,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:28:38,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:38,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... [2020-07-20 01:28:39,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:28:39,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:28:39,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:28:39,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:28:39,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:28:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-20 01:28:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-20 01:28:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-20 01:28:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-20 01:28:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-20 01:28:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:28:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-20 01:28:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:28:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:28:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:28:39,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:28:39,521 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:28:39,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:28:39 BoogieIcfgContainer [2020-07-20 01:28:39,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:28:39,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:28:39,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:28:39,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:28:39,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:28:38" (1/3) ... [2020-07-20 01:28:39,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa1a711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:28:39, skipping insertion in model container [2020-07-20 01:28:39,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:28:38" (2/3) ... [2020-07-20 01:28:39,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa1a711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:28:39, skipping insertion in model container [2020-07-20 01:28:39,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:28:39" (3/3) ... [2020-07-20 01:28:39,535 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-20 01:28:39,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:28:39,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:28:39,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:28:39,594 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:28:39,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:28:39,594 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:28:39,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:28:39,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:28:39,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:28:39,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:28:39,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:28:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 01:28:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 01:28:39,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:39,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:28:39,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:39,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-20 01:28:39,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:39,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950554423] [2020-07-20 01:28:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:39,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950554423] [2020-07-20 01:28:39,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:28:39,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:28:39,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697109115] [2020-07-20 01:28:39,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:28:39,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:28:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:28:39,855 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-20 01:28:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:40,037 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-07-20 01:28:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:28:40,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 01:28:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:40,052 INFO L225 Difference]: With dead ends: 140 [2020-07-20 01:28:40,052 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 01:28:40,057 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 [2020-07-20 01:28:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 01:28:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-20 01:28:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 01:28:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-20 01:28:40,110 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-20 01:28:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:40,110 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-20 01:28:40,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:28:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-20 01:28:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:28:40,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:40,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:28:40,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:28:40,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-20 01:28:40,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:40,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311800940] [2020-07-20 01:28:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:40,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311800940] [2020-07-20 01:28:40,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:28:40,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:28:40,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192025836] [2020-07-20 01:28:40,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:28:40,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:40,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:28:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:28:40,226 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-07-20 01:28:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:40,474 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-07-20 01:28:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:28:40,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 01:28:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:40,481 INFO L225 Difference]: With dead ends: 112 [2020-07-20 01:28:40,482 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 01:28:40,484 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 [2020-07-20 01:28:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 01:28:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-07-20 01:28:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-20 01:28:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-20 01:28:40,541 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-20 01:28:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:40,544 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-20 01:28:40,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:28:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-20 01:28:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 01:28:40,546 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:40,547 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] [2020-07-20 01:28:40,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:28:40,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-20 01:28:40,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:40,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15164124] [2020-07-20 01:28:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15164124] [2020-07-20 01:28:40,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:28:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:28:40,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198849361] [2020-07-20 01:28:40,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:28:40,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:28:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:28:40,655 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-07-20 01:28:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:40,926 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-07-20 01:28:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:28:40,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-20 01:28:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:40,929 INFO L225 Difference]: With dead ends: 253 [2020-07-20 01:28:40,929 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 01:28:40,931 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 [2020-07-20 01:28:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 01:28:40,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-07-20 01:28:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 01:28:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-20 01:28:40,953 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-20 01:28:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:40,954 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-20 01:28:40,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:28:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-20 01:28:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 01:28:40,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:40,956 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] [2020-07-20 01:28:40,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:28:40,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:40,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-20 01:28:40,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:40,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068756967] [2020-07-20 01:28:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:41,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068756967] [2020-07-20 01:28:41,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211502850] [2020-07-20 01:28:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66774406 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:28:41,137 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66774406 issued 4 check-sat command(s) [2020-07-20 01:28:41,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:28:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 01:28:41,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:28:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:41,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:28:41,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-07-20 01:28:41,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919506418] [2020-07-20 01:28:41,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:28:41,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:41,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:28:41,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:28:41,179 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-07-20 01:28:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:41,486 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-07-20 01:28:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:28:41,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-20 01:28:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:41,490 INFO L225 Difference]: With dead ends: 350 [2020-07-20 01:28:41,490 INFO L226 Difference]: Without dead ends: 235 [2020-07-20 01:28:41,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:28:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-20 01:28:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-07-20 01:28:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-20 01:28:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-07-20 01:28:41,538 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-07-20 01:28:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:41,538 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-07-20 01:28:41,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:28:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-07-20 01:28:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 01:28:41,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:41,546 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] [2020-07-20 01:28:41,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:28:41,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-07-20 01:28:41,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:41,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623920943] [2020-07-20 01:28:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:41,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623920943] [2020-07-20 01:28:41,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872468949] [2020-07-20 01:28:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62c79801 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 [2020-07-20 01:28:41,939 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62c79801 issued 4 check-sat command(s) [2020-07-20 01:28:41,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:28:41,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:28:41,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:28:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:28:41,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:28:41,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2020-07-20 01:28:41,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903940944] [2020-07-20 01:28:41,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:28:41,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:41,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:28:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:28:41,960 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states. [2020-07-20 01:28:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:42,235 INFO L93 Difference]: Finished difference Result 447 states and 675 transitions. [2020-07-20 01:28:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 01:28:42,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-07-20 01:28:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:42,239 INFO L225 Difference]: With dead ends: 447 [2020-07-20 01:28:42,240 INFO L226 Difference]: Without dead ends: 308 [2020-07-20 01:28:42,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:28:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-07-20 01:28:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174. [2020-07-20 01:28:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-20 01:28:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-07-20 01:28:42,258 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51 [2020-07-20 01:28:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:42,258 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-07-20 01:28:42,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:28:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-07-20 01:28:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 01:28:42,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:42,261 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] [2020-07-20 01:28:42,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:28:42,475 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:42,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-20 01:28:42,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:42,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276214508] [2020-07-20 01:28:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:28:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-20 01:28:42,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276214508] [2020-07-20 01:28:42,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:28:42,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:28:42,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854300357] [2020-07-20 01:28:42,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:28:42,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:28:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:28:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:28:42,561 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states. [2020-07-20 01:28:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:28:42,697 INFO L93 Difference]: Finished difference Result 318 states and 465 transitions. [2020-07-20 01:28:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:28:42,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-20 01:28:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:28:42,700 INFO L225 Difference]: With dead ends: 318 [2020-07-20 01:28:42,701 INFO L226 Difference]: Without dead ends: 155 [2020-07-20 01:28:42,702 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 [2020-07-20 01:28:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-20 01:28:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-07-20 01:28:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 01:28:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-07-20 01:28:42,712 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-07-20 01:28:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:28:42,712 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-07-20 01:28:42,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:28:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-07-20 01:28:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 01:28:42,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:28:42,714 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] [2020-07-20 01:28:42,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 01:28:42,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:28:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:28:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-20 01:28:42,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:28:42,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58746671] [2020-07-20 01:28:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1f32ec [2020-07-20 01:28:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:28:42,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:28:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:28:42,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:28:42,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:28:42,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:28:42,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 01:28:42,808 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 [2020-07-20 01:28:42,809 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 [2020-07-20 01:28:42,809 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 [2020-07-20 01:28:42,810 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 [2020-07-20 01:28:42,810 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 [2020-07-20 01:28:42,811 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 [2020-07-20 01:28:42,811 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 [2020-07-20 01:28:42,812 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 [2020-07-20 01:28:42,812 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 [2020-07-20 01:28:42,813 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 [2020-07-20 01:28:42,813 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 [2020-07-20 01:28:42,814 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 [2020-07-20 01:28:42,814 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 [2020-07-20 01:28:42,815 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 [2020-07-20 01:28:42,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:28:42 BoogieIcfgContainer [2020-07-20 01:28:42,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:28:42,832 INFO L168 Benchmark]: Toolchain (without parser) took 4156.24 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 102.5 MB in the beginning and 110.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:28:42,832 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 01:28:42,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:28:42,834 INFO L168 Benchmark]: Boogie Preprocessor took 131.67 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 180.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:28:42,835 INFO L168 Benchmark]: RCFGBuilder took 421.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:28:42,836 INFO L168 Benchmark]: TraceAbstraction took 3301.04 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 159.7 MB in the beginning and 110.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 94.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:28:42,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.67 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 180.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3301.04 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 159.7 MB in the beginning and 110.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 94.4 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: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 650 SDslu, 701 SDs, 0 SdLazy, 650 SolverSat, 240 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 321 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 24107 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 25/53 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...