/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 21:28:43,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 21:28:43,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 21:28:43,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 21:28:43,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 21:28:43,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 21:28:43,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 21:28:43,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 21:28:43,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 21:28:43,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 21:28:43,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 21:28:43,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 21:28:43,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 21:28:43,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 21:28:43,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 21:28:43,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 21:28:43,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 21:28:43,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 21:28:43,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 21:28:43,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 21:28:43,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 21:28:43,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 21:28:43,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 21:28:43,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 21:28:43,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-16 21:28:43,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-16 21:28:43,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-16 21:28:43,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-16 21:28:43,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-16 21:28:43,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-16 21:28:43,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-16 21:28:43,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-16 21:28:43,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-16 21:28:43,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-16 21:28:43,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-16 21:28:43,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-16 21:28:43,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-16 21:28:43,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-16 21:28:43,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 21:28:43,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 21:28:43,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 21:28:43,327 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-MCRwithoutDepranks-Lazy.epf [2022-03-16 21:28:43,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 21:28:43,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 21:28:43,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 21:28:43,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 21:28:43,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 21:28:43,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 21:28:43,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 21:28:43,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 21:28:43,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 21:28:43,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 21:28:43,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:43,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 21:28:43,355 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 21:28:43,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 21:28:43,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 21:28:43,357 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 21:28:43,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 21:28:43,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 21:28:43,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 21:28:43,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 21:28:43,565 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 21:28:43,566 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 21:28:43,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2022-03-16 21:28:43,567 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2022-03-16 21:28:43,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 21:28:43,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 21:28:43,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:43,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 21:28:43,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 21:28:43,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,615 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 21:28:43,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:43,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 21:28:43,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 21:28:43,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 21:28:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 21:28:43,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 21:28:43,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 21:28:43,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 21:28:43,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/1) ... [2022-03-16 21:28:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:43,663 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) [2022-03-16 21:28:43,665 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 [2022-03-16 21:28:43,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2022-03-16 21:28:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2022-03-16 21:28:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2022-03-16 21:28:43,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-03-16 21:28:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-03-16 21:28:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-03-16 21:28:43,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 21:28:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 21:28:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 21:28:43,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2022-03-16 21:28:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2022-03-16 21:28:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2022-03-16 21:28:43,697 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 21:28:43,736 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 21:28:43,737 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 21:28:43,842 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 21:28:43,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 21:28:43,857 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-16 21:28:43,859 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:43 BoogieIcfgContainer [2022-03-16 21:28:43,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 21:28:43,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 21:28:43,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 21:28:43,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 21:28:43,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:43" (1/2) ... [2022-03-16 21:28:43,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b9f4f8 and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:28:43, skipping insertion in model container [2022-03-16 21:28:43,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:43" (2/2) ... [2022-03-16 21:28:43,880 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2022-03-16 21:28:43,883 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 21:28:43,883 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 21:28:43,884 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-16 21:28:43,884 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 21:28:43,928 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,929 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,930 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,930 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,930 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,930 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,931 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,931 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,932 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,932 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,932 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,933 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,933 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,933 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,933 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,933 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,937 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,938 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:43,938 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-16 21:28:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:28:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:44,011 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) [2022-03-16 21:28:44,027 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 [2022-03-16 21:28:44,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:28:44,052 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=true [2022-03-16 21:28:44,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-16 21:28:44,132 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 55 transitions and produced 56 states. [2022-03-16 21:28:44,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-16 21:28:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1615810858, now seen corresponding path program 1 times [2022-03-16 21:28:44,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:44,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320541536] [2022-03-16 21:28:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 21:28:44,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:44,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320541536] [2022-03-16 21:28:44,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320541536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:44,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:44,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 21:28:44,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119098568] [2022-03-16 21:28:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-16 21:28:44,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-16 21:28:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-16 21:28:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:44,260 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:44,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2022-03-16 21:28:44,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:44,304 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 47 transitions and produced 48 states. [2022-03-16 21:28:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:44,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 21:28:44,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-16 21:28:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -716527660, now seen corresponding path program 1 times [2022-03-16 21:28:44,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:44,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332952130] [2022-03-16 21:28:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 21:28:44,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:44,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332952130] [2022-03-16 21:28:44,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332952130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:44,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:44,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-16 21:28:44,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066794501] [2022-03-16 21:28:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:44,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:28:44,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:28:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:28:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:44,366 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:44,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-03-16 21:28:44,367 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:44,367 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:01,439 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 35357 transitions and produced 28508 states. [2022-03-16 21:29:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:01,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 21:29:01,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-16 21:29:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:29:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2100181301, now seen corresponding path program 1 times [2022-03-16 21:29:01,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:29:01,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977656579] [2022-03-16 21:29:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:29:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:29:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:29:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2357598 backedges. 2669 proven. 0 refuted. 0 times theorem prover too weak. 2354929 trivial. 0 not checked. [2022-03-16 21:29:09,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:29:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977656579] [2022-03-16 21:29:09,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977656579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:29:09,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:29:09,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:29:09,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558257189] [2022-03-16 21:29:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:29:09,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:29:09,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:29:09,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:29:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:29:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:09,376 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:29:09,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-03-16 21:29:09,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:09,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:09,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:10,781 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2810 transitions and produced 2660 states. [2022-03-16 21:29:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:10,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-16 21:29:10,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-16 21:29:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:29:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash -641836118, now seen corresponding path program 1 times [2022-03-16 21:29:10,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:29:10,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114663994] [2022-03-16 21:29:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:29:10,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:29:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:29:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12480 backedges. 2301 proven. 0 refuted. 0 times theorem prover too weak. 10179 trivial. 0 not checked. [2022-03-16 21:29:10,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:29:10,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114663994] [2022-03-16 21:29:10,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114663994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:29:10,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:29:10,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:29:10,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188840577] [2022-03-16 21:29:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:29:10,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:29:10,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:29:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:29:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:29:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:10,979 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:29:10,979 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) [2022-03-16 21:29:10,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:10,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:10,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:10,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:12,396 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3096 transitions and produced 2918 states. [2022-03-16 21:29:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-16 21:29:12,398 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-16 21:29:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:29:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash -269452653, now seen corresponding path program 2 times [2022-03-16 21:29:12,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:29:12,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30274728] [2022-03-16 21:29:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:29:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:29:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:29:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15480 backedges. 2426 proven. 0 refuted. 0 times theorem prover too weak. 13054 trivial. 0 not checked. [2022-03-16 21:29:12,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:29:12,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30274728] [2022-03-16 21:29:12,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30274728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:29:12,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:29:12,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:29:12,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309610366] [2022-03-16 21:29:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:29:12,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:29:12,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:29:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:29:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:29:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:12,542 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:29:12,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-03-16 21:29:12,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:12,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:12,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.