/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 0.1.25-3af5e1f [2020-09-04 13:28:57,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:28:57,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:28:57,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:28:57,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:28:57,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:28:57,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:28:57,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:28:57,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:28:57,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:28:57,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:28:57,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:28:57,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:28:57,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:28:57,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:28:57,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:28:57,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:28:57,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:28:57,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:28:57,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:28:57,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:28:57,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:28:57,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:28:57,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:28:57,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:28:57,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:28:57,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:28:57,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:28:57,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:28:57,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:28:57,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:28:57,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:28:57,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:28:57,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:28:57,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:28:57,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:28:57,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:28:57,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:28:57,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:28:57,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:28:57,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:28:57,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:28:57,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:28:57,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:28:57,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:28:57,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:28:57,830 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:28:57,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:28:57,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:28:57,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:28:57,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:28:57,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:28:57,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:28:57,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:28:57,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:28:57,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:28:57,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:28:57,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:28:57,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:28:57,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:28:57,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:28:57,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:28:57,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:28:57,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:28:57,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:28:57,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:28:57,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:28:57,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:28:57,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:28:57,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:28:57,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:28:57,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:28:58,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:28:58,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:28:58,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:28:58,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:28:58,344 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:28:58,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-04 13:28:58,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dcca41b2/9f1c63c1d3b246d1a1576111c28a9caf/FLAGc26530182 [2020-09-04 13:28:59,021 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:28:59,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-04 13:28:59,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dcca41b2/9f1c63c1d3b246d1a1576111c28a9caf/FLAGc26530182 [2020-09-04 13:28:59,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dcca41b2/9f1c63c1d3b246d1a1576111c28a9caf [2020-09-04 13:28:59,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:28:59,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:28:59,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:28:59,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:28:59,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:28:59,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7302eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59, skipping insertion in model container [2020-09-04 13:28:59,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:28:59,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:28:59,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:28:59,700 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:28:59,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:28:59,745 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:28:59,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59 WrapperNode [2020-09-04 13:28:59,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:28:59,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:28:59,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:28:59,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:28:59,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... [2020-09-04 13:28:59,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:28:59,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:28:59,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:28:59,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:28:59,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:28:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:28:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:28:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 13:28:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-04 13:28:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-04 13:28:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-04 13:28:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-04 13:28:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-04 13:28:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-04 13:28:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-04 13:28:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-04 13:28:59,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:28:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:28:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 13:28:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:28:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-04 13:28:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-04 13:28:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-04 13:28:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-04 13:28:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-04 13:28:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-04 13:28:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-04 13:28:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-04 13:28:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:28:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:28:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:29:00,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:29:00,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:29:00,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:00 BoogieIcfgContainer [2020-09-04 13:29:00,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:29:00,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:29:00,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:29:00,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:29:00,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:28:59" (1/3) ... [2020-09-04 13:29:00,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af34c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:00, skipping insertion in model container [2020-09-04 13:29:00,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:59" (2/3) ... [2020-09-04 13:29:00,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af34c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:00, skipping insertion in model container [2020-09-04 13:29:00,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:00" (3/3) ... [2020-09-04 13:29:00,380 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-04 13:29:00,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:29:00,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:29:00,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:29:00,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:29:00,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:29:00,452 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:29:00,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:29:00,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:29:00,452 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:29:00,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:29:00,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:29:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-04 13:29:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:29:00,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:00,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:00,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:00,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-09-04 13:29:00,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:00,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219092100] [2020-09-04 13:29:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:00,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219092100] [2020-09-04 13:29:00,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:00,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:29:00,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834634212] [2020-09-04 13:29:00,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:29:00,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:00,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:29:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:29:00,763 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-04 13:29:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:00,975 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-09-04 13:29:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:29:00,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-04 13:29:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:00,994 INFO L225 Difference]: With dead ends: 140 [2020-09-04 13:29:00,995 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 13:29:00,999 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 [2020-09-04 13:29:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 13:29:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-09-04 13:29:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-04 13:29:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-09-04 13:29:01,059 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-09-04 13:29:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:01,059 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-09-04 13:29:01,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:29:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-09-04 13:29:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:29:01,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:01,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:01,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:29:01,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:01,062 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-09-04 13:29:01,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:01,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111339755] [2020-09-04 13:29:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:01,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111339755] [2020-09-04 13:29:01,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:01,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:29:01,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955802083] [2020-09-04 13:29:01,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:29:01,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:29:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:29:01,169 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-09-04 13:29:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:01,425 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-09-04 13:29:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:29:01,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-04 13:29:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:01,430 INFO L225 Difference]: With dead ends: 112 [2020-09-04 13:29:01,430 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 13:29:01,431 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 [2020-09-04 13:29:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 13:29:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-09-04 13:29:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 13:29:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-09-04 13:29:01,458 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-09-04 13:29:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:01,458 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-09-04 13:29:01,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:29:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-09-04 13:29:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:29:01,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:01,461 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] [2020-09-04 13:29:01,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:29:01,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-09-04 13:29:01,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:01,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628178105] [2020-09-04 13:29:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:29:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:01,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628178105] [2020-09-04 13:29:01,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:01,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:29:01,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141980856] [2020-09-04 13:29:01,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:29:01,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:01,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:29:01,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:29:01,619 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-09-04 13:29:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:01,890 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-09-04 13:29:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:29:01,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-04 13:29:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:01,894 INFO L225 Difference]: With dead ends: 253 [2020-09-04 13:29:01,894 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 13:29:01,895 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 [2020-09-04 13:29:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 13:29:01,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-09-04 13:29:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 13:29:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-09-04 13:29:01,918 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-09-04 13:29:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:01,919 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-09-04 13:29:01,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:29:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-09-04 13:29:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 13:29:01,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:01,921 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] [2020-09-04 13:29:01,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:29:01,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-09-04 13:29:01,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:01,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163787576] [2020-09-04 13:29:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 13:29:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-04 13:29:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:02,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163787576] [2020-09-04 13:29:02,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160170929] [2020-09-04 13:29:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:29:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:29:02,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:02,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:29:02,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-09-04 13:29:02,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534615571] [2020-09-04 13:29:02,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:29:02,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:02,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:29:02,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:29:02,200 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-09-04 13:29:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:02,509 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-09-04 13:29:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:29:02,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-04 13:29:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:02,513 INFO L225 Difference]: With dead ends: 350 [2020-09-04 13:29:02,513 INFO L226 Difference]: Without dead ends: 235 [2020-09-04 13:29:02,515 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 [2020-09-04 13:29:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-04 13:29:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-09-04 13:29:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-04 13:29:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-09-04 13:29:02,537 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-09-04 13:29:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:02,537 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-09-04 13:29:02,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:29:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-09-04 13:29:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 13:29:02,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:02,540 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] [2020-09-04 13:29:02,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:02,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:02,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-09-04 13:29:02,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:02,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810965558] [2020-09-04 13:29:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 13:29:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 13:29:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:29:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:02,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810965558] [2020-09-04 13:29:02,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898629015] [2020-09-04 13:29:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:29:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:29:02,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 13:29:02,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:29:02,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2020-09-04 13:29:02,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201903800] [2020-09-04 13:29:02,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:29:02,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:02,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:29:02,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:29:02,981 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 4 states. [2020-09-04 13:29:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:03,062 INFO L93 Difference]: Finished difference Result 387 states and 569 transitions. [2020-09-04 13:29:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:29:03,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-04 13:29:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:03,074 INFO L225 Difference]: With dead ends: 387 [2020-09-04 13:29:03,075 INFO L226 Difference]: Without dead ends: 248 [2020-09-04 13:29:03,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:29:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-09-04 13:29:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2020-09-04 13:29:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 13:29:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2020-09-04 13:29:03,114 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 288 transitions. Word has length 51 [2020-09-04 13:29:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:03,114 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-09-04 13:29:03,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:29:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 288 transitions. [2020-09-04 13:29:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 13:29:03,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:03,121 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] [2020-09-04 13:29:03,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:03,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-09-04 13:29:03,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:03,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087827166] [2020-09-04 13:29:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 13:29:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 13:29:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 13:29:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 13:29:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-04 13:29:03,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087827166] [2020-09-04 13:29:03,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:03,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:29:03,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065835709] [2020-09-04 13:29:03,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:29:03,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:03,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:29:03,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:29:03,438 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. Second operand 6 states. [2020-09-04 13:29:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:03,594 INFO L93 Difference]: Finished difference Result 366 states and 542 transitions. [2020-09-04 13:29:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:29:03,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-09-04 13:29:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:03,598 INFO L225 Difference]: With dead ends: 366 [2020-09-04 13:29:03,598 INFO L226 Difference]: Without dead ends: 179 [2020-09-04 13:29:03,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:29:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-04 13:29:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 110. [2020-09-04 13:29:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 13:29:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2020-09-04 13:29:03,609 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 63 [2020-09-04 13:29:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:03,610 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2020-09-04 13:29:03,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:29:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2020-09-04 13:29:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 13:29:03,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:03,612 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] [2020-09-04 13:29:03,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:29:03,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-09-04 13:29:03,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:03,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82844333] [2020-09-04 13:29:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:29:03,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:29:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:29:03,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:29:03,681 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:29:03,681 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:29:03,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:29:03,715 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 [2020-09-04 13:29:03,716 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 [2020-09-04 13:29:03,717 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 [2020-09-04 13:29:03,718 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 [2020-09-04 13:29:03,719 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 [2020-09-04 13:29:03,719 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 [2020-09-04 13:29:03,720 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 [2020-09-04 13:29:03,721 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 [2020-09-04 13:29:03,721 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 [2020-09-04 13:29:03,721 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 [2020-09-04 13:29:03,729 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 [2020-09-04 13:29:03,730 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 [2020-09-04 13:29:03,730 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 [2020-09-04 13:29:03,734 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 [2020-09-04 13:29:03,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:29:03 BoogieIcfgContainer [2020-09-04 13:29:03,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:29:03,755 INFO L168 Benchmark]: Toolchain (without parser) took 4417.60 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 102.7 MB in the beginning and 144.1 MB in the end (delta: -41.4 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,756 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,758 INFO L168 Benchmark]: Boogie Preprocessor took 134.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,759 INFO L168 Benchmark]: RCFGBuilder took 486.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 160.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,760 INFO L168 Benchmark]: TraceAbstraction took 3380.19 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 160.3 MB in the beginning and 144.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:03,764 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 160.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3380.19 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 160.3 MB in the beginning and 144.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 61.9 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 459 SDslu, 640 SDs, 0 SdLazy, 515 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 249 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s 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...