/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 09:20:43,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 09:20:43,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 09:20:43,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 09:20:43,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 09:20:43,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 09:20:43,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 09:20:43,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 09:20:43,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 09:20:43,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 09:20:43,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 09:20:43,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 09:20:43,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 09:20:43,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 09:20:43,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 09:20:43,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 09:20:43,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 09:20:43,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 09:20:43,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 09:20:43,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 09:20:43,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 09:20:43,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 09:20:43,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 09:20:43,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 09:20:43,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-16 09:20:43,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-16 09:20:43,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-16 09:20:43,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-16 09:20:43,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-16 09:20:43,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-16 09:20:43,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-16 09:20:43,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-16 09:20:43,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-16 09:20:43,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-16 09:20:43,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-16 09:20:43,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-16 09:20:43,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-16 09:20:43,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-16 09:20:43,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 09:20:43,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 09:20:43,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 09:20:43,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-16 09:20:43,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 09:20:43,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 09:20:43,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 09:20:43,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 09:20:43,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 09:20:43,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 09:20:43,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 09:20:43,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 09:20:43,309 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 09:20:43,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 09:20:43,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 09:20:43,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 09:20:43,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 09:20:43,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 09:20:43,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 09:20:43,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 09:20:43,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 09:20:43,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 09:20:43,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 09:20:43,311 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 09:20:43,312 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 09:20:43,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 09:20:43,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 09:20:43,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 09:20:43,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 09:20:43,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-16 09:20:43,495 INFO L275 PluginConnector]: CDTParser initialized [2022-03-16 09:20:43,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-03-16 09:20:43,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f96ade86/4005cce7cfaf4851ad4f6a11f4f84c70/FLAG7bb4850f9 [2022-03-16 09:20:43,877 INFO L306 CDTParser]: Found 1 translation units. [2022-03-16 09:20:43,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-03-16 09:20:43,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f96ade86/4005cce7cfaf4851ad4f6a11f4f84c70/FLAG7bb4850f9 [2022-03-16 09:20:44,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f96ade86/4005cce7cfaf4851ad4f6a11f4f84c70 [2022-03-16 09:20:44,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 09:20:44,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-16 09:20:44,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-16 09:20:44,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-16 09:20:44,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-16 09:20:44,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784494d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44, skipping insertion in model container [2022-03-16 09:20:44,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-16 09:20:44,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-16 09:20:44,465 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/parallel-misc-4.wvr.c[2950,2963] [2022-03-16 09:20:44,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 09:20:44,471 INFO L203 MainTranslator]: Completed pre-run [2022-03-16 09:20:44,484 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/parallel-misc-4.wvr.c[2950,2963] [2022-03-16 09:20:44,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 09:20:44,493 INFO L208 MainTranslator]: Completed translation [2022-03-16 09:20:44,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44 WrapperNode [2022-03-16 09:20:44,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-16 09:20:44,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 09:20:44,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 09:20:44,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 09:20:44,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,514 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-16 09:20:44,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 09:20:44,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 09:20:44,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 09:20:44,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 09:20:44,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 09:20:44,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 09:20:44,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 09:20:44,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 09:20:44,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (1/1) ... [2022-03-16 09:20:44,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 09:20:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 09:20:44,573 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 09:20:44,593 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 09:20:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 09:20:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 09:20:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-16 09:20:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-16 09:20:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-16 09:20:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 09:20:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 09:20:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-16 09:20:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-16 09:20:44,614 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 09:20:44,683 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 09:20:44,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 09:20:44,897 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 09:20:44,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 09:20:44,914 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-16 09:20:44,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:20:44 BoogieIcfgContainer [2022-03-16 09:20:44,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 09:20:44,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 09:20:44,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 09:20:44,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 09:20:44,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 09:20:44" (1/3) ... [2022-03-16 09:20:44,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273a81b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:20:44, skipping insertion in model container [2022-03-16 09:20:44,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:20:44" (2/3) ... [2022-03-16 09:20:44,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273a81b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:20:44, skipping insertion in model container [2022-03-16 09:20:44,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:20:44" (3/3) ... [2022-03-16 09:20:44,923 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-03-16 09:20:44,926 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 09:20:44,926 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 09:20:44,926 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 09:20:44,926 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 09:20:44,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,977 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,978 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,981 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,981 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,981 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,981 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,981 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,982 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 09:20:44,985 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-16 09:20:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 09:20:45,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 09:20:45,040 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 09:20:45,041 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 09:20:45,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 09:20:45,065 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=false, mMcrOverapproximateWrwc=true [2022-03-16 09:20:45,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-16 09:20:45,125 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 125 transitions and produced 126 states. [2022-03-16 09:20:45,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1449306712, now seen corresponding path program 1 times [2022-03-16 09:20:45,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:45,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041540042] [2022-03-16 09:20:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:45,253 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 09:20:45,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:45,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041540042] [2022-03-16 09:20:45,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041540042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 09:20:45,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 09:20:45,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 09:20:45,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715751589] [2022-03-16 09:20:45,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 09:20:45,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-16 09:20:45,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-16 09:20:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-16 09:20:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,273 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:45,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 09:20:45,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,308 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 125 transitions and produced 126 states. [2022-03-16 09:20:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 09:20:45,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash -519419097, now seen corresponding path program 1 times [2022-03-16 09:20:45,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:45,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632997800] [2022-03-16 09:20:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:45,555 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 09:20:45,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:45,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632997800] [2022-03-16 09:20:45,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632997800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 09:20:45,555 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 09:20:45,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-16 09:20:45,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155242986] [2022-03-16 09:20:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 09:20:45,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-16 09:20:45,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-16 09:20:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-16 09:20:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,558 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:45,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2022-03-16 09:20:45,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,664 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 229 transitions and produced 225 states. [2022-03-16 09:20:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 09:20:45,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -974417197, now seen corresponding path program 1 times [2022-03-16 09:20:45,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:45,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894103890] [2022-03-16 09:20:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-16 09:20:45,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:45,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894103890] [2022-03-16 09:20:45,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894103890] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 09:20:45,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 09:20:45,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-16 09:20:45,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610587424] [2022-03-16 09:20:45,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 09:20:45,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 09:20:45,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 09:20:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-16 09:20:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,773 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:45,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 09:20:45,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:45,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,815 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 316 transitions and produced 312 states. [2022-03-16 09:20:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:45,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-16 09:20:45,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1789025430, now seen corresponding path program 1 times [2022-03-16 09:20:45,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:45,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43403138] [2022-03-16 09:20:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-03-16 09:20:45,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:45,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43403138] [2022-03-16 09:20:45,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43403138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 09:20:45,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747774617] [2022-03-16 09:20:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:45,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 09:20:45,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 09:20:45,977 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 09:20:46,037 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 09:20:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:46,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-16 09:20:46,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 09:20:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-03-16 09:20:46,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 09:20:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-03-16 09:20:46,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747774617] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-16 09:20:46,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-16 09:20:46,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-03-16 09:20:46,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492701005] [2022-03-16 09:20:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 09:20:46,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-16 09:20:46,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:46,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-16 09:20:46,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-16 09:20:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:46,717 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:46,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 09:20:46,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:46,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:46,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:46,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:46,821 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1367 transitions and produced 1336 states. [2022-03-16 09:20:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-16 09:20:46,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-16 09:20:47,038 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,SelfDestructingSolverStorable3 [2022-03-16 09:20:47,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1561669418, now seen corresponding path program 1 times [2022-03-16 09:20:47,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:47,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446666233] [2022-03-16 09:20:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:47,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8917 backedges. 4440 proven. 0 refuted. 0 times theorem prover too weak. 4477 trivial. 0 not checked. [2022-03-16 09:20:47,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:47,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446666233] [2022-03-16 09:20:47,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446666233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 09:20:47,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 09:20:47,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-16 09:20:47,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084365391] [2022-03-16 09:20:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 09:20:47,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 09:20:47,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 09:20:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-16 09:20:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:47,543 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:47,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 09:20:47,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:47,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:47,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:47,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-16 09:20:47,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:47,614 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2015 transitions and produced 1956 states. [2022-03-16 09:20:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-16 09:20:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:47,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-16 09:20:47,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 09:20:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 09:20:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash -251627658, now seen corresponding path program 1 times [2022-03-16 09:20:47,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 09:20:47,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376213060] [2022-03-16 09:20:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 09:20:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20374 backedges. 7321 proven. 7555 refuted. 0 times theorem prover too weak. 5498 trivial. 0 not checked. [2022-03-16 09:20:48,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 09:20:48,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376213060] [2022-03-16 09:20:48,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376213060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 09:20:48,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197764024] [2022-03-16 09:20:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 09:20:48,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 09:20:48,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 09:20:48,525 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 09:20:48,578 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 09:20:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 09:20:48,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 120 conjunts are in the unsatisfiable core [2022-03-16 09:20:48,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 09:20:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20374 backedges. 6849 proven. 8229 refuted. 0 times theorem prover too weak. 5296 trivial. 0 not checked. [2022-03-16 09:20:49,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 09:20:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 20374 backedges. 7420 proven. 7583 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2022-03-16 09:20:51,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197764024] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 09:20:51,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 09:20:51,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 23 [2022-03-16 09:20:51,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276189638] [2022-03-16 09:20:51,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 09:20:51,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-16 09:20:51,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 09:20:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-16 09:20:51,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2022-03-16 09:20:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:51,032 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 09:20:51,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 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 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-16 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 09:20:51,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.