/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps X --traceabstraction.defines.what.statements.are.considered.a.step.in.por LOOP -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-32214ab [2023-05-20 16:28:36,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-20 16:28:36,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-20 16:28:36,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-05-20 16:28:36,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-05-20 16:28:36,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-05-20 16:28:36,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-05-20 16:28:36,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-05-20 16:28:36,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-05-20 16:28:36,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-05-20 16:28:36,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-05-20 16:28:36,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-05-20 16:28:36,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-20 16:28:36,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-20 16:28:36,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-20 16:28:36,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-20 16:28:36,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-20 16:28:36,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-20 16:28:36,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-20 16:28:36,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-20 16:28:36,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-20 16:28:36,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-20 16:28:36,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-20 16:28:36,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-20 16:28:36,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-05-20 16:28:36,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-05-20 16:28:36,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-05-20 16:28:36,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-05-20 16:28:36,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-05-20 16:28:36,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-05-20 16:28:36,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-05-20 16:28:36,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-05-20 16:28:36,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-05-20 16:28:36,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-05-20 16:28:36,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-05-20 16:28:36,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-05-20 16:28:36,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-05-20 16:28:36,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-05-20 16:28:36,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-20 16:28:36,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-20 16:28:36,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-20 16:28:36,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-20 16:28:36,874 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-20 16:28:36,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-20 16:28:36,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-20 16:28:36,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-20 16:28:36,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-20 16:28:36,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-20 16:28:36,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-20 16:28:36,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-20 16:28:36,876 INFO L138 SettingsManager]: * Use SBE=true [2023-05-20 16:28:36,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-20 16:28:36,876 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-20 16:28:36,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-20 16:28:36,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-20 16:28:36,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-20 16:28:36,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 16:28:36,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-20 16:28:36,878 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-20 16:28:36,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> X Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> LOOP [2023-05-20 16:28:37,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-20 16:28:37,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-20 16:28:37,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-20 16:28:37,049 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-20 16:28:37,050 INFO L275 PluginConnector]: CDTParser initialized [2023-05-20 16:28:37,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-05-20 16:28:37,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e5af430/aca509e92d9244b591d0c233157305c6/FLAG512b999aa [2023-05-20 16:28:37,452 INFO L306 CDTParser]: Found 1 translation units. [2023-05-20 16:28:37,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-05-20 16:28:37,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e5af430/aca509e92d9244b591d0c233157305c6/FLAG512b999aa [2023-05-20 16:28:37,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e5af430/aca509e92d9244b591d0c233157305c6 [2023-05-20 16:28:37,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-20 16:28:37,838 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-20 16:28:37,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-20 16:28:37,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-20 16:28:37,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-20 16:28:37,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 04:28:37" (1/1) ... [2023-05-20 16:28:37,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7a2f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:37, skipping insertion in model container [2023-05-20 16:28:37,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 04:28:37" (1/1) ... [2023-05-20 16:28:37,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-20 16:28:37,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-20 16:28:38,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-05-20 16:28:38,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 16:28:38,321 INFO L203 MainTranslator]: Completed pre-run [2023-05-20 16:28:38,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-05-20 16:28:38,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 16:28:38,417 INFO L208 MainTranslator]: Completed translation [2023-05-20 16:28:38,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38 WrapperNode [2023-05-20 16:28:38,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-20 16:28:38,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-20 16:28:38,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-20 16:28:38,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-20 16:28:38,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,486 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 339 [2023-05-20 16:28:38,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-20 16:28:38,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-20 16:28:38,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-20 16:28:38,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-20 16:28:38,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-20 16:28:38,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-20 16:28:38,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-20 16:28:38,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-20 16:28:38,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (1/1) ... [2023-05-20 16:28:38,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 16:28:38,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:28:38,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-05-20 16:28:38,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-05-20 16:28:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-05-20 16:28:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-05-20 16:28:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-05-20 16:28:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-05-20 16:28:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-05-20 16:28:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-20 16:28:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-20 16:28:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-20 16:28:38,643 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-20 16:28:38,819 INFO L235 CfgBuilder]: Building ICFG [2023-05-20 16:28:38,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-20 16:28:39,264 INFO L276 CfgBuilder]: Performing block encoding [2023-05-20 16:28:39,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-20 16:28:39,271 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2023-05-20 16:28:39,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 04:28:39 BoogieIcfgContainer [2023-05-20 16:28:39,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-20 16:28:39,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-20 16:28:39,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-20 16:28:39,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-20 16:28:39,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.05 04:28:37" (1/3) ... [2023-05-20 16:28:39,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abc4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 04:28:39, skipping insertion in model container [2023-05-20 16:28:39,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 04:28:38" (2/3) ... [2023-05-20 16:28:39,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abc4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 04:28:39, skipping insertion in model container [2023-05-20 16:28:39,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 04:28:39" (3/3) ... [2023-05-20 16:28:39,293 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-05-20 16:28:39,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-20 16:28:39,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-20 16:28:39,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-05-20 16:28:39,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-20 16:28:39,449 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-05-20 16:28:39,507 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:28:39,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 16:28:39,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:28:39,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 16:28:39,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-05-20 16:28:39,541 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 16:28:39,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t3_funThread1of1ForFork0 ======== [2023-05-20 16:28:39,558 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aacab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:28:39,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 16:28:48,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:28:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:28:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1369075369, now seen corresponding path program 1 times [2023-05-20 16:28:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:28:48,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879118175] [2023-05-20 16:28:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:28:48,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:28:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:28:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2023-05-20 16:28:49,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:28:49,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879118175] [2023-05-20 16:28:49,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879118175] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:28:49,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684168621] [2023-05-20 16:28:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:28:49,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:28:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:28:49,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:28:49,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-05-20 16:28:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:28:49,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 1 conjunts are in the unsatisfiable core [2023-05-20 16:28:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:28:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-05-20 16:28:49,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-20 16:28:49,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684168621] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:28:49,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-20 16:28:49,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-05-20 16:28:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039299683] [2023-05-20 16:28:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:28:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-20 16:28:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:28:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-20 16:28:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-05-20 16:28:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:28:49,924 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:28:49,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:28:49,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:12,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-05-20 16:29:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-05-20 16:29:12,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2015546059, now seen corresponding path program 1 times [2023-05-20 16:29:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469799407] [2023-05-20 16:29:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-05-20 16:29:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:12,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469799407] [2023-05-20 16:29:12,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469799407] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:29:12,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796430210] [2023-05-20 16:29:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:12,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:12,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:29:12,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-05-20 16:29:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:12,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-05-20 16:29:12,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:29:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-05-20 16:29:12,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-20 16:29:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796430210] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:29:12,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-20 16:29:12,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-05-20 16:29:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408795133] [2023-05-20 16:29:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:29:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 16:29:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 16:29:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-05-20 16:29:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:12,667 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:12,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:12,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:12,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:12,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-05-20 16:29:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:13,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:13,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash -660600233, now seen corresponding path program 1 times [2023-05-20 16:29:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:13,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427908789] [2023-05-20 16:29:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-05-20 16:29:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:13,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427908789] [2023-05-20 16:29:13,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427908789] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:29:13,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117498152] [2023-05-20 16:29:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:13,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:29:13,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-05-20 16:29:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:13,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 2 conjunts are in the unsatisfiable core [2023-05-20 16:29:13,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:29:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-05-20 16:29:13,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-20 16:29:13,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117498152] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:29:13,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-20 16:29:13,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-05-20 16:29:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435889682] [2023-05-20 16:29:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:29:13,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 16:29:13,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 16:29:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-05-20 16:29:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:13,484 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:13,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:13,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:13,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:13,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:13,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-05-20 16:29:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:13,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -970075825, now seen corresponding path program 1 times [2023-05-20 16:29:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:13,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562551582] [2023-05-20 16:29:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:13,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-20 16:29:14,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:14,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562551582] [2023-05-20 16:29:14,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562551582] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:29:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562650376] [2023-05-20 16:29:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:14,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:14,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:29:14,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-05-20 16:29:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 2 conjunts are in the unsatisfiable core [2023-05-20 16:29:14,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:29:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-05-20 16:29:14,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-20 16:29:14,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562650376] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:29:14,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-20 16:29:14,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-05-20 16:29:14,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258074464] [2023-05-20 16:29:14,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:29:14,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 16:29:14,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:14,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 16:29:14,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-05-20 16:29:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:14,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:14,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:14,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:14,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:14,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:14,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:14,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-05-20 16:29:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:14,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1394713952, now seen corresponding path program 1 times [2023-05-20 16:29:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:14,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426254607] [2023-05-20 16:29:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-20 16:29:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:14,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426254607] [2023-05-20 16:29:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426254607] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:29:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375172861] [2023-05-20 16:29:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:14,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:29:14,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-05-20 16:29:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 4 conjunts are in the unsatisfiable core [2023-05-20 16:29:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:29:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-20 16:29:15,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 16:29:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-20 16:29:15,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375172861] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 16:29:15,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 16:29:15,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-05-20 16:29:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397063322] [2023-05-20 16:29:15,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 16:29:15,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-05-20 16:29:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-05-20 16:29:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-05-20 16:29:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:15,092 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:15,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:15,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:15,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:15,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:15,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-05-20 16:29:23,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-20 16:29:23,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-05-20 16:29:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:23,990 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-05-20 16:29:23,992 INFO L307 ceAbstractionStarter]: Result for error location t3_funThread1of1ForFork0 was SAFE (1/3) [2023-05-20 16:29:24,002 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:29:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 16:29:24,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:24,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 16:29:24,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-05-20 16:29:24,026 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 16:29:24,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-05-20 16:29:24,029 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aacab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:29:24,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-05-20 16:29:28,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-20 16:29:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1191044386, now seen corresponding path program 1 times [2023-05-20 16:29:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:28,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106848727] [2023-05-20 16:29:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 16:29:28,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-20 16:29:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 16:29:28,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-20 16:29:28,422 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-20 16:29:28,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-05-20 16:29:28,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-05-20 16:29:28,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-05-20 16:29:28,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-05-20 16:29:28,426 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2023-05-20 16:29:28,427 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN (2/3) [2023-05-20 16:29:28,427 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-05-20 16:29:28,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-05-20 16:29:28,489 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-05-20 16:29:28,492 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:29:28,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 16:29:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:28,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 16:29:28,498 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 16:29:28,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread1of2ForFork2 ======== [2023-05-20 16:29:28,501 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aacab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:29:28,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 16:29:28,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2023-05-20 16:29:41,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:41,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2120575272, now seen corresponding path program 1 times [2023-05-20 16:29:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:41,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559880613] [2023-05-20 16:29:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:41,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-05-20 16:29:41,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:41,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559880613] [2023-05-20 16:29:41,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559880613] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:29:41,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 16:29:41,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-20 16:29:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471924692] [2023-05-20 16:29:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:29:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-20 16:29:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-20 16:29:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-20 16:29:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,343 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:41,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-05-20 16:29:41,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2077029827, now seen corresponding path program 1 times [2023-05-20 16:29:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:41,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815090712] [2023-05-20 16:29:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:41,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-05-20 16:29:41,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:41,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815090712] [2023-05-20 16:29:41,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815090712] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:29:41,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 16:29:41,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-05-20 16:29:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059333956] [2023-05-20 16:29:41,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:29:41,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 16:29:41,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 16:29:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-05-20 16:29:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,472 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:41,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:41,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-05-20 16:29:41,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:29:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:29:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1490397773, now seen corresponding path program 1 times [2023-05-20 16:29:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:29:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632583435] [2023-05-20 16:29:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:29:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:29:41,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:29:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632583435] [2023-05-20 16:29:41,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632583435] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:29:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297836925] [2023-05-20 16:29:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:29:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:29:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:29:41,907 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:29:41,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-05-20 16:29:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:29:42,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 6 conjunts are in the unsatisfiable core [2023-05-20 16:29:42,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:29:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:29:42,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 16:29:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:29:42,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297836925] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 16:29:42,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 16:29:42,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-05-20 16:29:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429828130] [2023-05-20 16:29:42,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 16:29:42,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-05-20 16:29:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:29:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-05-20 16:29:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-05-20 16:29:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:42,347 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:29:42,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.357142857142858) internal successors, (341), 14 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:29:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:29:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:29:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:30:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-05-20 16:30:30,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-20 16:30:30,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-05-20 16:30:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:30:30,309 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-05-20 16:30:30,309 INFO L307 ceAbstractionStarter]: Result for error location t2_funThread1of2ForFork2 was SAFE (1/5) [2023-05-20 16:30:30,312 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:30:30,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 16:30:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:30:30,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 16:30:30,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2023-05-20 16:30:30,338 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 16:30:30,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread2of2ForFork2 ======== [2023-05-20 16:30:30,340 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aacab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:30:30,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 16:30:42,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:30:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:30:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash -360807591, now seen corresponding path program 1 times [2023-05-20 16:30:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:30:42,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484590172] [2023-05-20 16:30:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:30:42,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:30:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:30:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-05-20 16:30:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:30:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484590172] [2023-05-20 16:30:42,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484590172] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:30:42,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 16:30:42,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-20 16:30:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133890157] [2023-05-20 16:30:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:30:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-20 16:30:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:30:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-20 16:30:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-20 16:30:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:42,854 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:30:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:30:42,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-05-20 16:30:51,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:30:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:30:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -751383167, now seen corresponding path program 1 times [2023-05-20 16:30:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:30:51,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133282492] [2023-05-20 16:30:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:30:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:30:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:30:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-05-20 16:30:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:30:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133282492] [2023-05-20 16:30:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133282492] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:30:52,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 16:30:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-05-20 16:30:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132784787] [2023-05-20 16:30:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:30:52,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 16:30:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:30:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 16:30:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-05-20 16:30:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,013 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:30:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:30:52,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:30:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-05-20 16:30:52,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:30:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:30:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1210366062, now seen corresponding path program 1 times [2023-05-20 16:30:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:30:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920329455] [2023-05-20 16:30:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:30:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:30:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:30:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:30:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:30:52,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920329455] [2023-05-20 16:30:52,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920329455] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 16:30:52,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955548100] [2023-05-20 16:30:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:30:52,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 16:30:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:30:52,266 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-20 16:30:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-05-20 16:30:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:30:52,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 6 conjunts are in the unsatisfiable core [2023-05-20 16:30:52,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 16:30:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:30:52,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 16:30:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-05-20 16:30:52,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955548100] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 16:30:52,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 16:30:52,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-05-20 16:30:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813479693] [2023-05-20 16:30:52,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 16:30:52,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-05-20 16:30:52,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:30:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-05-20 16:30:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-05-20 16:30:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,715 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:30:52,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.714285714285715) internal successors, (360), 14 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:30:52,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:30:52,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:30:52,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:31:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:31:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 16:31:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-05-20 16:31:39,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-20 16:31:39,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-05-20 16:31:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-05-20 16:31:39,906 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-05-20 16:31:39,906 INFO L307 ceAbstractionStarter]: Result for error location t2_funThread2of2ForFork2 was SAFE (2/5) [2023-05-20 16:31:39,911 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:31:39,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 16:31:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 16:31:39,912 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 16:31:39,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2023-05-20 16:31:39,920 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 16:31:39,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t3_funThread1of2ForFork0 ======== [2023-05-20 16:31:39,922 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aacab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 16:31:39,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 16:32:11,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 16:32:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 16:32:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -71172845, now seen corresponding path program 1 times [2023-05-20 16:32:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 16:32:11,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194528110] [2023-05-20 16:32:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 16:32:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 16:32:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 16:32:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-05-20 16:32:11,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 16:32:11,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194528110] [2023-05-20 16:32:11,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194528110] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 16:32:11,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 16:32:11,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-20 16:32:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38489977] [2023-05-20 16:32:11,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 16:32:11,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-20 16:32:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 16:32:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-20 16:32:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-20 16:32:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 16:32:11,418 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 16:32:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.0) internal successors, (360), 2 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-20 16:32:11,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.