/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/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 13:07:16,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 13:07:16,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 13:07:16,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 13:07:16,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 13:07:16,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 13:07:16,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 13:07:16,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 13:07:16,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 13:07:16,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 13:07:16,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 13:07:16,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 13:07:16,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 13:07:16,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 13:07:16,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 13:07:16,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 13:07:16,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 13:07:16,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 13:07:16,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 13:07:16,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 13:07:16,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 13:07:16,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 13:07:16,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 13:07:16,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 13:07:16,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 13:07:16,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-16 13:07:16,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-16 13:07:16,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-16 13:07:16,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-16 13:07:16,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-16 13:07:16,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-16 13:07:16,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-16 13:07:16,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-16 13:07:16,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 13:07:16,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 13:07:16,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 13:07:16,538 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 13:07:16,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 13:07:16,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 13:07:16,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 13:07:16,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 13:07:16,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 13:07:16,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 13:07:16,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 13:07:16,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 13:07:16,573 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 13:07:16,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 13:07:16,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 13:07:16,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 13:07:16,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 13:07:16,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 13:07:16,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 13:07:16,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 13:07:16,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 13:07:16,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 13:07:16,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 13:07:16,578 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 13:07:16,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 13:07:16,580 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 13:07:16,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 13:07:16,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 13:07:16,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 13:07:16,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 13:07:16,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-16 13:07:16,783 INFO L275 PluginConnector]: CDTParser initialized [2022-03-16 13:07:16,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2022-03-16 13:07:16,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cafd4f3/4d6ca769724e4cbbb22b2f9dc13c6baa/FLAG91b953cf2 [2022-03-16 13:07:17,207 INFO L306 CDTParser]: Found 1 translation units. [2022-03-16 13:07:17,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2022-03-16 13:07:17,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cafd4f3/4d6ca769724e4cbbb22b2f9dc13c6baa/FLAG91b953cf2 [2022-03-16 13:07:17,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cafd4f3/4d6ca769724e4cbbb22b2f9dc13c6baa [2022-03-16 13:07:17,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 13:07:17,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-16 13:07:17,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-16 13:07:17,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-16 13:07:17,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-16 13:07:17,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:07:17" (1/1) ... [2022-03-16 13:07:17,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4f6ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:17, skipping insertion in model container [2022-03-16 13:07:17,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:07:17" (1/1) ... [2022-03-16 13:07:17,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-16 13:07:17,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-16 13:07:17,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2022-03-16 13:07:17,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 13:07:17,999 INFO L203 MainTranslator]: Completed pre-run [2022-03-16 13:07:18,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2022-03-16 13:07:18,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 13:07:18,075 INFO L208 MainTranslator]: Completed translation [2022-03-16 13:07:18,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18 WrapperNode [2022-03-16 13:07:18,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-16 13:07:18,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 13:07:18,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 13:07:18,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 13:07:18,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,127 INFO L137 Inliner]: procedures = 169, calls = 18, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 108 [2022-03-16 13:07:18,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 13:07:18,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 13:07:18,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 13:07:18,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 13:07:18,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 13:07:18,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 13:07:18,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 13:07:18,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 13:07:18,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (1/1) ... [2022-03-16 13:07:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 13:07:18,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 13:07:18,192 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 13:07:18,199 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 13:07:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-16 13:07:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-03-16 13:07:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-03-16 13:07:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-16 13:07:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-16 13:07:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-16 13:07:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-16 13:07:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-16 13:07:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 13:07:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 13:07:18,229 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 13:07:18,318 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 13:07:18,320 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 13:07:18,526 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 13:07:18,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 13:07:18,562 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-16 13:07:18,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 01:07:18 BoogieIcfgContainer [2022-03-16 13:07:18,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 13:07:18,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 13:07:18,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 13:07:18,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 13:07:18,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:07:17" (1/3) ... [2022-03-16 13:07:18,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9e19a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:07:18, skipping insertion in model container [2022-03-16 13:07:18,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:07:18" (2/3) ... [2022-03-16 13:07:18,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9e19a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:07:18, skipping insertion in model container [2022-03-16 13:07:18,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 01:07:18" (3/3) ... [2022-03-16 13:07:18,571 INFO L111 eAbstractionObserver]: Analyzing ICFG 47_ticket_lock_hc_backoff_vs.i [2022-03-16 13:07:18,575 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 13:07:18,575 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 13:07:18,575 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-16 13:07:18,575 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 13:07:18,618 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,619 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,619 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,619 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,619 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,620 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,620 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,620 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,620 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,620 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,621 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,621 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,621 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,623 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,624 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,624 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,627 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,628 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,628 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,628 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,628 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,628 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 13:07:18,648 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-16 13:07:18,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 13:07:18,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 13:07:18,703 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 13:07:18,704 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 13:07:18,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 13:07:18,732 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 13:07:18,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-16 13:07:18,839 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 35 states. [2022-03-16 13:07:18,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-16 13:07:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 13:07:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 253472294, now seen corresponding path program 1 times [2022-03-16 13:07:18,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 13:07:18,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93658852] [2022-03-16 13:07:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 13:07:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:19,048 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 13:07:19,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 13:07:19,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93658852] [2022-03-16 13:07:19,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93658852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 13:07:19,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 13:07:19,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 13:07:19,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893891070] [2022-03-16 13:07:19,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 13:07:19,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-16 13:07:19,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 13:07:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-16 13:07:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-16 13:07:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:19,090 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 13:07:19,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 13:07:19,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:19,166 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 41 transitions and produced 42 states. [2022-03-16 13:07:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:19,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 13:07:19,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-16 13:07:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 13:07:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash 686024596, now seen corresponding path program 1 times [2022-03-16 13:07:19,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 13:07:19,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234149943] [2022-03-16 13:07:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 13:07:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:19,293 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 13:07:19,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 13:07:19,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234149943] [2022-03-16 13:07:19,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234149943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 13:07:19,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 13:07:19,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 13:07:19,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201681701] [2022-03-16 13:07:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 13:07:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 13:07:19,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 13:07:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 13:07:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 13:07:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:19,297 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 13:07:19,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 13:07:19,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:19,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:21,353 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1711 transitions and produced 1666 states. [2022-03-16 13:07:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:07:21,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 13:07:21,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-16 13:07:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 13:07:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1662781548, now seen corresponding path program 1 times [2022-03-16 13:07:21,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 13:07:21,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764471825] [2022-03-16 13:07:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 13:07:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 2108 proven. 159 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2022-03-16 13:07:22,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 13:07:22,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764471825] [2022-03-16 13:07:22,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764471825] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 13:07:22,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104378462] [2022-03-16 13:07:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:22,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 13:07:22,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 13:07:22,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 13:07:22,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 13:07:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:23,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-16 13:07:23,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 13:07:24,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-16 13:07:25,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-03-16 13:07:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 2108 proven. 735 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2022-03-16 13:07:25,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 13:07:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 2108 proven. 50 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2022-03-16 13:07:26,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104378462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 13:07:26,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 13:07:26,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 38, 8] total 49 [2022-03-16 13:07:26,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075909867] [2022-03-16 13:07:26,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 13:07:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-16 13:07:26,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 13:07:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-16 13:07:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-16 13:07:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:26,681 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 13:07:26,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.857142857142857) internal successors, (287), 49 states have internal predecessors, (287), 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 13:07:26,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:26,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:07:26,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:33,685 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 6195 transitions and produced 5219 states. [2022-03-16 13:07:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:07:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-16 13:07:33,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-16 13:07:33,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-16 13:07:33,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-16 13:07:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 13:07:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash -180337898, now seen corresponding path program 1 times [2022-03-16 13:07:33,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 13:07:33,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609595234] [2022-03-16 13:07:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 13:07:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19405 backedges. 7425 proven. 2714 refuted. 0 times theorem prover too weak. 9266 trivial. 0 not checked. [2022-03-16 13:07:35,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 13:07:35,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609595234] [2022-03-16 13:07:35,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609595234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 13:07:35,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414019677] [2022-03-16 13:07:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:07:35,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 13:07:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 13:07:35,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 13:07:35,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 13:07:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:07:36,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 228 conjunts are in the unsatisfiable core [2022-03-16 13:07:36,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 13:07:43,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-16 13:07:44,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-03-16 13:07:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19405 backedges. 7425 proven. 10161 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2022-03-16 13:07:44,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 13:07:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19405 backedges. 7425 proven. 2333 refuted. 0 times theorem prover too weak. 9647 trivial. 0 not checked. [2022-03-16 13:07:48,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414019677] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 13:07:48,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 13:07:48,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 110, 10] total 125 [2022-03-16 13:07:48,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080936622] [2022-03-16 13:07:48,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 13:07:48,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-03-16 13:07:48,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 13:07:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-03-16 13:07:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=14881, Unknown=0, NotChecked=0, Total=15500 [2022-03-16 13:07:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:48,423 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 13:07:48,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 5.592) internal successors, (699), 125 states have internal predecessors, (699), 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 13:07:48,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:07:48,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:07:48,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2022-03-16 13:07:48,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:08:02,405 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 12157 transitions and produced 10142 states. [2022-03-16 13:08:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:08:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:08:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-16 13:08:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-16 13:08:02,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-16 13:08:02,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 13:08:02,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-16 13:08:02,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 13:08:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash 450749035, now seen corresponding path program 2 times [2022-03-16 13:08:02,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 13:08:02,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522498198] [2022-03-16 13:08:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 13:08:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 13:08:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 13:08:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 90247 backedges. 17579 proven. 24750 refuted. 0 times theorem prover too weak. 47918 trivial. 0 not checked. [2022-03-16 13:08:06,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 13:08:06,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522498198] [2022-03-16 13:08:06,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522498198] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 13:08:06,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014128087] [2022-03-16 13:08:06,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 13:08:06,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 13:08:06,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 13:08:06,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 13:08:06,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-16 13:08:09,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 13:08:09,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 13:08:09,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 5283 conjuncts, 552 conjunts are in the unsatisfiable core [2022-03-16 13:08:09,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 13:08:35,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-16 13:08:35,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-03-16 13:08:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 90247 backedges. 415 proven. 87428 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2022-03-16 13:08:35,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 13:08:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 90247 backedges. 415 proven. 37747 refuted. 0 times theorem prover too weak. 52085 trivial. 0 not checked. [2022-03-16 13:08:48,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014128087] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 13:08:48,688 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 13:08:48,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 272, 11] total 289 [2022-03-16 13:08:48,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733955900] [2022-03-16 13:08:48,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 13:08:48,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 289 states [2022-03-16 13:08:48,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 13:08:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 289 interpolants. [2022-03-16 13:08:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1521, Invalid=81711, Unknown=0, NotChecked=0, Total=83232 [2022-03-16 13:08:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:08:48,707 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 13:08:48,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 289 states, 289 states have (on average 5.463667820069205) internal successors, (1579), 289 states have internal predecessors, (1579), 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 13:08:48,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 13:08:48,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 13:08:48,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2022-03-16 13:08:48,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 139 states. [2022-03-16 13:08:48,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.