/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 22:10:28,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 22:10:28,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 22:10:28,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-19 22:10:28,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-19 22:10:28,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-19 22:10:28,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-19 22:10:28,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-19 22:10:28,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-19 22:10:28,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-19 22:10:28,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-19 22:10:28,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-19 22:10:28,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-19 22:10:28,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-19 22:10:28,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-19 22:10:28,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-19 22:10:28,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-19 22:10:28,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-19 22:10:28,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-19 22:10:28,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-19 22:10:28,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-19 22:10:28,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-19 22:10:28,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-19 22:10:28,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-19 22:10:28,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-19 22:10:28,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-19 22:10:28,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-19 22:10:28,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-19 22:10:28,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-19 22:10:28,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-19 22:10:28,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-19 22:10:28,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-19 22:10:28,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-19 22:10:28,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-19 22:10:28,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-19 22:10:28,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-19 22:10:28,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-19 22:10:28,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-19 22:10:28,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-19 22:10:28,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-19 22:10:28,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-19 22:10:28,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-wrwc.epf [2022-02-19 22:10:28,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 22:10:28,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 22:10:28,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 22:10:28,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 22:10:28,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 22:10:28,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 22:10:28,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 22:10:28,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 22:10:28,431 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 22:10:28,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 22:10:28,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 22:10:28,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 22:10:28,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 22:10:28,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 22:10:28,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 22:10:28,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 22:10:28,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 22:10:28,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 22:10:28,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:10:28,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 22:10:28,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 22:10:28,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 22:10:28,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 22:10:28,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 22:10:28,437 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-19 22:10:28,437 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-02-19 22:10:28,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 22:10:28,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 22:10:28,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 22:10:28,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 22:10:28,684 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 22:10:28,685 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 22:10:28,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl [2022-02-19 22:10:28,686 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl' [2022-02-19 22:10:28,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 22:10:28,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 22:10:28,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 22:10:28,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 22:10:28,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 22:10:28,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,743 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 22:10:28,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 22:10:28,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 22:10:28,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 22:10:28,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 22:10:28,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 22:10:28,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 22:10:28,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 22:10:28,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 22:10:28,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/1) ... [2022-02-19 22:10:28,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:10:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:10:28,796 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) [2022-02-19 22:10:28,806 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 [2022-02-19 22:10:28,824 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-02-19 22:10:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-02-19 22:10:28,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-02-19 22:10:28,824 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-02-19 22:10:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-02-19 22:10:28,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-02-19 22:10:28,824 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-02-19 22:10:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-02-19 22:10:28,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-02-19 22:10:28,825 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-02-19 22:10:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-02-19 22:10:28,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-02-19 22:10:28,825 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-02-19 22:10:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-02-19 22:10:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-02-19 22:10:28,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2022-02-19 22:10:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2022-02-19 22:10:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2022-02-19 22:10:28,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-19 22:10:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 22:10:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 22:10:28,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2022-02-19 22:10:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2022-02-19 22:10:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2022-02-19 22:10:28,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-02-19 22:10:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-02-19 22:10:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-02-19 22:10:28,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2022-02-19 22:10:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2022-02-19 22:10:28,828 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2022-02-19 22:10:28,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2022-02-19 22:10:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2022-02-19 22:10:28,828 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2022-02-19 22:10:28,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2022-02-19 22:10:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2022-02-19 22:10:28,828 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2022-02-19 22:10:28,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2022-02-19 22:10:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2022-02-19 22:10:28,829 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2022-02-19 22:10:28,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2022-02-19 22:10:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2022-02-19 22:10:28,829 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2022-02-19 22:10:28,830 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 22:10:28,873 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 22:10:28,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 22:10:28,959 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 22:10:28,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 22:10:28,966 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-19 22:10:28,967 INFO L202 PluginConnector]: Adding new model example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:10:28 BoogieIcfgContainer [2022-02-19 22:10:28,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 22:10:28,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 22:10:28,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 22:10:28,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 22:10:28,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:10:28" (1/2) ... [2022-02-19 22:10:28,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec76698 and model type example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 10:10:28, skipping insertion in model container [2022-02-19 22:10:28,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:10:28" (2/2) ... [2022-02-19 22:10:28,974 INFO L111 eAbstractionObserver]: Analyzing ICFG example_13.bpl [2022-02-19 22:10:28,978 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 22:10:28,978 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 22:10:28,979 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 22:10:28,979 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 22:10:29,116 INFO L148 ThreadInstanceAdder]: Constructed 169 joinOtherThreadTransitions. [2022-02-19 22:10:29,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 22:10:29,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:10:29,171 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) [2022-02-19 22:10:29,172 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 [2022-02-19 22:10:29,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-19 22:10:29,206 INFO L339 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, mLazyFiniteAutomaton=true, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=false [2022-02-19 22:10:29,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-02-19 22:10:29,752 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3842 transitions and produced 1180 states. [2022-02-19 22:10:29,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 431152268, now seen corresponding path program 1 times [2022-02-19 22:10:29,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:29,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091406157] [2022-02-19 22:10:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:29,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:29,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091406157] [2022-02-19 22:10:29,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091406157] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:29,964 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:29,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 22:10:29,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070488671] [2022-02-19 22:10:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:29,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 22:10:29,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 22:10:29,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 22:10:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,013 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:30,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-19 22:10:30,028 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,339 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1290 transitions and produced 622 states. [2022-02-19 22:10:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 22:10:30,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1449396704, now seen corresponding path program 1 times [2022-02-19 22:10:30,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:30,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206565989] [2022-02-19 22:10:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:30,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:30,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206565989] [2022-02-19 22:10:30,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206565989] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:30,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:30,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 22:10:30,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815965523] [2022-02-19 22:10:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:30,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 22:10:30,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 22:10:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 22:10:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,432 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:30,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-19 22:10:30,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,572 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 550 transitions and produced 348 states. [2022-02-19 22:10:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-19 22:10:30,573 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash 637668098, now seen corresponding path program 1 times [2022-02-19 22:10:30,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:30,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73400972] [2022-02-19 22:10:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:30,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:30,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73400972] [2022-02-19 22:10:30,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73400972] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:30,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:30,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 22:10:30,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148166245] [2022-02-19 22:10:30,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:30,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 22:10:30,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 22:10:30,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 22:10:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,667 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:30,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-19 22:10:30,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,818 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 521 transitions and produced 334 states. [2022-02-19 22:10:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-19 22:10:30,819 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:30,820 INFO L85 PathProgramCache]: Analyzing trace with hash 365974164, now seen corresponding path program 1 times [2022-02-19 22:10:30,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:30,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110942233] [2022-02-19 22:10:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:30,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:30,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110942233] [2022-02-19 22:10:30,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110942233] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:30,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:30,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 22:10:30,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723183252] [2022-02-19 22:10:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:30,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 22:10:30,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 22:10:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 22:10:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:30,896 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:30,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-19 22:10:30,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:30,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:31,007 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 521 transitions and produced 335 states. [2022-02-19 22:10:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-19 22:10:31,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -521200642, now seen corresponding path program 1 times [2022-02-19 22:10:31,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:31,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494633311] [2022-02-19 22:10:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:31,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:31,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494633311] [2022-02-19 22:10:31,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494633311] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:31,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:31,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 22:10:31,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428823665] [2022-02-19 22:10:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:31,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 22:10:31,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 22:10:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 22:10:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:31,062 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:31,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-19 22:10:31,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:31,165 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 521 transitions and produced 334 states. [2022-02-19 22:10:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:31,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-19 22:10:31,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 10 more)] === [2022-02-19 22:10:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:10:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 365379518, now seen corresponding path program 1 times [2022-02-19 22:10:31,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:10:31,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298219016] [2022-02-19 22:10:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:10:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:10:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:10:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:10:32,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:10:32,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298219016] [2022-02-19 22:10:32,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298219016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 22:10:32,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 22:10:32,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-19 22:10:32,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673862885] [2022-02-19 22:10:32,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 22:10:32,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-19 22:10:32,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:10:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-19 22:10:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-02-19 22:10:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:10:32,376 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:10:32,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 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) [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 22:10:32,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.