/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/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 14:18:58,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 14:18:58,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 14:18:58,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 14:18:58,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 14:18:58,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 14:18:58,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 14:18:58,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 14:18:58,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 14:18:58,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 14:18:58,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 14:18:58,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 14:18:58,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 14:18:58,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 14:18:58,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 14:18:58,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 14:18:58,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 14:18:58,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 14:18:58,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 14:18:58,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 14:18:58,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 14:18:58,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 14:18:58,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 14:18:58,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 14:18:58,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 14:18:58,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 14:18:58,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 14:18:58,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 14:18:58,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 14:18:58,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 14:18:58,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 14:18:58,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 14:18:58,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 14:18:58,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 14:18:58,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 14:18:58,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 14:18:58,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 14:18:58,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 14:18:58,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 14:18:58,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 14:18:58,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 14:18:58,500 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 [2022-02-10 14:18:58,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 14:18:58,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 14:18:58,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 14:18:58,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 14:18:58,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 14:18:58,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 14:18:58,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 14:18:58,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 14:18:58,528 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 14:18:58,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 14:18:58,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 14:18:58,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 14:18:58,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 14:18:58,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 14:18:58,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 14:18:58,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-10 14:18:58,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 14:18:58,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 14:18:58,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 14:18:58,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 14:18:58,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 14:18:58,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 14:18:58,748 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 14:18:58,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-02-10 14:18:58,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d62d837/5f10cf9b1ae54c348dc55cf9868d9db5/FLAG7d754507d [2022-02-10 14:18:59,152 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 14:18:59,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-02-10 14:18:59,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d62d837/5f10cf9b1ae54c348dc55cf9868d9db5/FLAG7d754507d [2022-02-10 14:18:59,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d62d837/5f10cf9b1ae54c348dc55cf9868d9db5 [2022-02-10 14:18:59,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 14:18:59,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 14:18:59,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 14:18:59,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 14:18:59,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 14:18:59,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0c88c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59, skipping insertion in model container [2022-02-10 14:18:59,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 14:18:59,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 14:18:59,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-02-10 14:18:59,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 14:18:59,748 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 14:18:59,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-02-10 14:18:59,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 14:18:59,792 INFO L208 MainTranslator]: Completed translation [2022-02-10 14:18:59,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59 WrapperNode [2022-02-10 14:18:59,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 14:18:59,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 14:18:59,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 14:18:59,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 14:18:59,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,830 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-02-10 14:18:59,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 14:18:59,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 14:18:59,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 14:18:59,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 14:18:59,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 14:18:59,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 14:18:59,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 14:18:59,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 14:18:59,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (1/1) ... [2022-02-10 14:18:59,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 14:18:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 14:18:59,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 14:18:59,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 14:18:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 14:18:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 14:18:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 14:18:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 14:18:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 14:18:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 14:18:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 14:18:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 14:18:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 14:18:59,952 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 14:19:00,027 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 14:19:00,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 14:19:00,199 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 14:19:00,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 14:19:00,230 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 14:19:00,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:19:00 BoogieIcfgContainer [2022-02-10 14:19:00,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 14:19:00,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 14:19:00,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 14:19:00,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 14:19:00,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 02:18:59" (1/3) ... [2022-02-10 14:19:00,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:19:00, skipping insertion in model container [2022-02-10 14:19:00,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:18:59" (2/3) ... [2022-02-10 14:19:00,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:19:00, skipping insertion in model container [2022-02-10 14:19:00,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:19:00" (3/3) ... [2022-02-10 14:19:00,239 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-02-10 14:19:00,242 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 14:19:00,243 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 14:19:00,243 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 14:19:00,243 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 14:19:00,274 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,275 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,275 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,275 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,275 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,276 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,277 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,277 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,277 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,277 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,278 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,278 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,279 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,279 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,279 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,279 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,281 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,281 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,282 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,282 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,282 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,283 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,283 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,283 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,291 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,294 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,294 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,294 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,294 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,295 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 14:19:00,298 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 14:19:00,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 14:19:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 14:19:00,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-10 14:19:00,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-10 14:19:00,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 14:19:00,357 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 [2022-02-10 14:19:00,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 14:19:00,685 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 147 states. [2022-02-10 14:19:00,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 14:19:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 14:19:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2004744861, now seen corresponding path program 1 times [2022-02-10 14:19:00,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 14:19:00,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049578140] [2022-02-10 14:19:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 14:19:00,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 14:19:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 14:19:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 14:19:00,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 14:19:00,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049578140] [2022-02-10 14:19:00,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049578140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 14:19:00,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 14:19:00,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 14:19:00,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529665985] [2022-02-10 14:19:00,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 14:19:00,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 14:19:00,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 14:19:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 14:19:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 14:19:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:00,930 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 14:19:00,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 14:19:00,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:01,073 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 147 states. [2022-02-10 14:19:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:01,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 14:19:01,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 14:19:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 14:19:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash 803970203, now seen corresponding path program 1 times [2022-02-10 14:19:01,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 14:19:01,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377672719] [2022-02-10 14:19:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 14:19:01,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 14:19:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 14:19:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 14:19:01,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 14:19:01,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377672719] [2022-02-10 14:19:01,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377672719] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 14:19:01,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 14:19:01,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 14:19:01,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167899545] [2022-02-10 14:19:01,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 14:19:01,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 14:19:01,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 14:19:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 14:19:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 14:19:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:01,411 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 14:19:01,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 14:19:01,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:01,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:02,353 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 522 transitions and produced 523 states. [2022-02-10 14:19:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 14:19:02,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 14:19:02,354 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 14:19:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 14:19:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2005528861, now seen corresponding path program 1 times [2022-02-10 14:19:02,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 14:19:02,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072804541] [2022-02-10 14:19:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 14:19:02,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 14:19:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 14:19:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 14:19:02,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 14:19:02,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072804541] [2022-02-10 14:19:02,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072804541] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 14:19:02,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 14:19:02,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 14:19:02,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957193452] [2022-02-10 14:19:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 14:19:02,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 14:19:02,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 14:19:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 14:19:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 14:19:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:02,551 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 14:19:02,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 14:19:02,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:19:02,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 14:19:02,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:20:46,955 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 21939 transitions and produced 21940 states. [2022-02-10 14:20:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:20:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 14:20:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 14:20:46,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 14:20:46,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 14:20:46,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 14:20:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -38592100, now seen corresponding path program 1 times [2022-02-10 14:20:46,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 14:20:46,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171022399] [2022-02-10 14:20:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 14:20:46,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 14:20:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 14:20:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 14:20:47,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 14:20:47,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171022399] [2022-02-10 14:20:47,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171022399] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 14:20:47,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 14:20:47,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 14:20:47,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727629159] [2022-02-10 14:20:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 14:20:47,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 14:20:47,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 14:20:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 14:20:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 14:20:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:20:47,114 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 14:20:47,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 14:20:47,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 14:20:47,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-10 14:20:47,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 14:20:47,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.