/usr/bin/java -Xmx16000000000 -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-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 09:15:23,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 09:15:23,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 09:15:23,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 09:15:23,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 09:15:23,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 09:15:23,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 09:15:23,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 09:15:23,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 09:15:23,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 09:15:23,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 09:15:23,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 09:15:23,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 09:15:23,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 09:15:23,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 09:15:23,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 09:15:23,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 09:15:23,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 09:15:23,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 09:15:23,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 09:15:23,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 09:15:23,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 09:15:23,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 09:15:23,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 09:15:23,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 09:15:23,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 09:15:23,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 09:15:23,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 09:15:23,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 09:15:23,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 09:15:23,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 09:15:23,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 09:15:23,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 09:15:23,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 09:15:23,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 09:15:23,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 09:15:23,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 09:15:23,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 09:15:23,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 09:15:23,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 09:15:23,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 09:15:23,446 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-FA-NoLbe-Separate.epf [2022-01-18 09:15:23,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 09:15:23,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 09:15:23,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 09:15:23,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 09:15:23,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 09:15:23,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 09:15:23,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 09:15:23,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 09:15:23,483 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 09:15:23,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 09:15:23,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 09:15:23,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 09:15:23,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 09:15:23,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 09:15:23,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 09:15:23,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 09:15:23,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 09:15:23,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:23,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 09:15:23,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 09:15:23,487 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 09:15:23,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 09:15:23,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 09:15:23,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 09:15:23,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 09:15:23,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 09:15:23,735 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 09:15:23,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:23,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a1250c6/2f21b2ac1c7849e396d8c66f30ca91de/FLAG5cbca1c01 [2022-01-18 09:15:24,282 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 09:15:24,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:24,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a1250c6/2f21b2ac1c7849e396d8c66f30ca91de/FLAG5cbca1c01 [2022-01-18 09:15:24,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a1250c6/2f21b2ac1c7849e396d8c66f30ca91de [2022-01-18 09:15:24,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 09:15:24,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 09:15:24,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:24,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 09:15:24,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 09:15:24,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:24" (1/1) ... [2022-01-18 09:15:24,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44539135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:24, skipping insertion in model container [2022-01-18 09:15:24,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:15:24" (1/1) ... [2022-01-18 09:15:24,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 09:15:24,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 09:15:24,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 09:15:25,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:25,102 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 09:15:25,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 09:15:25,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:15:25,194 INFO L208 MainTranslator]: Completed translation [2022-01-18 09:15:25,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25 WrapperNode [2022-01-18 09:15:25,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 09:15:25,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:25,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 09:15:25,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 09:15:25,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,250 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-18 09:15:25,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 09:15:25,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 09:15:25,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 09:15:25,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 09:15:25,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 09:15:25,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 09:15:25,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 09:15:25,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 09:15:25,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (1/1) ... [2022-01-18 09:15:25,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:15:25,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 09:15:25,308 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) [2022-01-18 09:15:25,313 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 [2022-01-18 09:15:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 09:15:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 09:15:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 09:15:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 09:15:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 09:15:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 09:15:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 09:15:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 09:15:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 09:15:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 09:15:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 09:15:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 09:15:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 09:15:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 09:15:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 09:15:25,341 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 09:15:25,467 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 09:15:25,469 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 09:15:25,656 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 09:15:25,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 09:15:25,662 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 09:15:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:25 BoogieIcfgContainer [2022-01-18 09:15:25,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 09:15:25,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 09:15:25,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 09:15:25,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 09:15:25,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 09:15:24" (1/3) ... [2022-01-18 09:15:25,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccf637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:25, skipping insertion in model container [2022-01-18 09:15:25,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:15:25" (2/3) ... [2022-01-18 09:15:25,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccf637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:15:25, skipping insertion in model container [2022-01-18 09:15:25,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:15:25" (3/3) ... [2022-01-18 09:15:25,675 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 09:15:25,680 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 09:15:25,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 09:15:25,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 09:15:25,681 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 09:15:25,739 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,739 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,739 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,740 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,740 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,740 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,740 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,740 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,741 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,741 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,742 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,742 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,743 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,743 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,743 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,743 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,743 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,744 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,744 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,744 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,747 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,747 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,748 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,748 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,749 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,750 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,750 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,751 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,752 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,752 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,752 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,759 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,759 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,760 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,760 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,762 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,762 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,762 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,762 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,764 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,764 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,765 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,765 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:15:25,767 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 09:15:25,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 09:15:25,833 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=FINITE_AUTOMATA, 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 [2022-01-18 09:15:25,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 09:15:25,849 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 92 transitions, 199 flow [2022-01-18 09:15:26,149 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6591 states, 6590 states have (on average 3.504855842185129) internal successors, (23097), 6590 states have internal predecessors, (23097), 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) [2022-01-18 09:15:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 6591 states, 6590 states have (on average 3.504855842185129) internal successors, (23097), 6590 states have internal predecessors, (23097), 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) [2022-01-18 09:15:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-18 09:15:26,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:26,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:26,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2022-01-18 09:15:26,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359677164] [2022-01-18 09:15:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:26,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:26,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:26,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359677164] [2022-01-18 09:15:26,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359677164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:26,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:26,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404370090] [2022-01-18 09:15:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:26,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:26,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:26,664 INFO L87 Difference]: Start difference. First operand has 6591 states, 6590 states have (on average 3.504855842185129) internal successors, (23097), 6590 states have internal predecessors, (23097), 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) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:27,033 INFO L93 Difference]: Finished difference Result 7620 states and 26086 transitions. [2022-01-18 09:15:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:27,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-18 09:15:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:27,104 INFO L225 Difference]: With dead ends: 7620 [2022-01-18 09:15:27,104 INFO L226 Difference]: Without dead ends: 5562 [2022-01-18 09:15:27,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:27,112 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 117 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:27,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 448 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2022-01-18 09:15:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5562. [2022-01-18 09:15:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5561 states have (on average 3.4132350296709224) internal successors, (18981), 5561 states have internal predecessors, (18981), 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) [2022-01-18 09:15:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 18981 transitions. [2022-01-18 09:15:27,541 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 18981 transitions. Word has length 55 [2022-01-18 09:15:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:27,543 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 18981 transitions. [2022-01-18 09:15:27,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:15:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 18981 transitions. [2022-01-18 09:15:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 09:15:27,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:27,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:27,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 09:15:27,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -297709268, now seen corresponding path program 1 times [2022-01-18 09:15:27,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811374667] [2022-01-18 09:15:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:27,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:27,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811374667] [2022-01-18 09:15:27,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811374667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:27,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:27,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:27,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97218085] [2022-01-18 09:15:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:27,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:27,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:27,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:27,831 INFO L87 Difference]: Start difference. First operand 5562 states and 18981 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2022-01-18 09:15:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:28,092 INFO L93 Difference]: Finished difference Result 10330 states and 34747 transitions. [2022-01-18 09:15:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) Word has length 57 [2022-01-18 09:15:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:28,147 INFO L225 Difference]: With dead ends: 10330 [2022-01-18 09:15:28,148 INFO L226 Difference]: Without dead ends: 7730 [2022-01-18 09:15:28,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:28,153 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 120 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:28,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 506 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2022-01-18 09:15:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 6406. [2022-01-18 09:15:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6406 states, 6405 states have (on average 3.3723653395784545) internal successors, (21600), 6405 states have internal predecessors, (21600), 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) [2022-01-18 09:15:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 21600 transitions. [2022-01-18 09:15:28,432 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 21600 transitions. Word has length 57 [2022-01-18 09:15:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:28,434 INFO L470 AbstractCegarLoop]: Abstraction has 6406 states and 21600 transitions. [2022-01-18 09:15:28,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2022-01-18 09:15:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 21600 transitions. [2022-01-18 09:15:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-18 09:15:28,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:28,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:28,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 09:15:28,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1969054478, now seen corresponding path program 1 times [2022-01-18 09:15:28,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:28,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52180621] [2022-01-18 09:15:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:28,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:28,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:28,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52180621] [2022-01-18 09:15:28,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52180621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:28,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:28,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:28,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491829299] [2022-01-18 09:15:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:28,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:28,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:28,601 INFO L87 Difference]: Start difference. First operand 6406 states and 21600 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2022-01-18 09:15:28,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:28,729 INFO L93 Difference]: Finished difference Result 6994 states and 23441 transitions. [2022-01-18 09:15:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:28,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) Word has length 58 [2022-01-18 09:15:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:28,780 INFO L225 Difference]: With dead ends: 6994 [2022-01-18 09:15:28,781 INFO L226 Difference]: Without dead ends: 6014 [2022-01-18 09:15:28,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:28,789 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 95 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:28,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 438 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-01-18 09:15:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5582. [2022-01-18 09:15:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5581 states have (on average 3.3717971689661352) internal successors, (18818), 5581 states have internal predecessors, (18818), 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) [2022-01-18 09:15:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 18818 transitions. [2022-01-18 09:15:29,031 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 18818 transitions. Word has length 58 [2022-01-18 09:15:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 18818 transitions. [2022-01-18 09:15:29,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2022-01-18 09:15:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 18818 transitions. [2022-01-18 09:15:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 09:15:29,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:29,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:29,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 09:15:29,045 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:29,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1126678965, now seen corresponding path program 1 times [2022-01-18 09:15:29,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:29,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252653114] [2022-01-18 09:15:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:29,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:29,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:29,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252653114] [2022-01-18 09:15:29,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252653114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:29,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:29,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:29,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215821943] [2022-01-18 09:15:29,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:29,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:29,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:29,265 INFO L87 Difference]: Start difference. First operand 5582 states and 18818 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-01-18 09:15:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:29,497 INFO L93 Difference]: Finished difference Result 8004 states and 26563 transitions. [2022-01-18 09:15:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 09:15:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) Word has length 59 [2022-01-18 09:15:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:29,531 INFO L225 Difference]: With dead ends: 8004 [2022-01-18 09:15:29,532 INFO L226 Difference]: Without dead ends: 6729 [2022-01-18 09:15:29,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:29,539 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 150 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:29,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 704 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 09:15:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2022-01-18 09:15:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 4987. [2022-01-18 09:15:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 3.344765342960289) internal successors, (16677), 4986 states have internal predecessors, (16677), 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) [2022-01-18 09:15:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 16677 transitions. [2022-01-18 09:15:29,772 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 16677 transitions. Word has length 59 [2022-01-18 09:15:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:29,772 INFO L470 AbstractCegarLoop]: Abstraction has 4987 states and 16677 transitions. [2022-01-18 09:15:29,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-01-18 09:15:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 16677 transitions. [2022-01-18 09:15:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 09:15:29,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:29,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:29,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 09:15:29,785 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -315138131, now seen corresponding path program 1 times [2022-01-18 09:15:29,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:29,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882055038] [2022-01-18 09:15:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:29,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882055038] [2022-01-18 09:15:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882055038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:29,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:29,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 09:15:29,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224537752] [2022-01-18 09:15:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:29,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 09:15:29,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 09:15:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 09:15:29,864 INFO L87 Difference]: Start difference. First operand 4987 states and 16677 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-01-18 09:15:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:29,983 INFO L93 Difference]: Finished difference Result 6271 states and 20671 transitions. [2022-01-18 09:15:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) Word has length 60 [2022-01-18 09:15:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:30,000 INFO L225 Difference]: With dead ends: 6271 [2022-01-18 09:15:30,000 INFO L226 Difference]: Without dead ends: 4476 [2022-01-18 09:15:30,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:30,001 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 141 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:30,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 359 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2022-01-18 09:15:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4476. [2022-01-18 09:15:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.2715083798882683) internal successors, (14640), 4475 states have internal predecessors, (14640), 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) [2022-01-18 09:15:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 14640 transitions. [2022-01-18 09:15:30,115 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 14640 transitions. Word has length 60 [2022-01-18 09:15:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:30,115 INFO L470 AbstractCegarLoop]: Abstraction has 4476 states and 14640 transitions. [2022-01-18 09:15:30,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-01-18 09:15:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 14640 transitions. [2022-01-18 09:15:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-18 09:15:30,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:30,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:30,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 09:15:30,127 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash -994182806, now seen corresponding path program 1 times [2022-01-18 09:15:30,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712856436] [2022-01-18 09:15:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:30,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:30,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:30,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712856436] [2022-01-18 09:15:30,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712856436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:30,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:30,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:30,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957953117] [2022-01-18 09:15:30,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:30,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:30,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:30,240 INFO L87 Difference]: Start difference. First operand 4476 states and 14640 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2022-01-18 09:15:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:30,434 INFO L93 Difference]: Finished difference Result 4602 states and 14640 transitions. [2022-01-18 09:15:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 09:15:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) Word has length 61 [2022-01-18 09:15:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:30,446 INFO L225 Difference]: With dead ends: 4602 [2022-01-18 09:15:30,446 INFO L226 Difference]: Without dead ends: 3132 [2022-01-18 09:15:30,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 09:15:30,448 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 233 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:30,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 429 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-01-18 09:15:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3132. [2022-01-18 09:15:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 3.115298626636857) internal successors, (9754), 3131 states have internal predecessors, (9754), 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) [2022-01-18 09:15:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 9754 transitions. [2022-01-18 09:15:30,539 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 9754 transitions. Word has length 61 [2022-01-18 09:15:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:30,540 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 9754 transitions. [2022-01-18 09:15:30,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2022-01-18 09:15:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 9754 transitions. [2022-01-18 09:15:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-18 09:15:30,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:30,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:30,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 09:15:30,547 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:30,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1571184457, now seen corresponding path program 1 times [2022-01-18 09:15:30,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:30,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136464040] [2022-01-18 09:15:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:30,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:30,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136464040] [2022-01-18 09:15:30,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136464040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:30,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:30,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:30,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521240539] [2022-01-18 09:15:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:30,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:30,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:30,697 INFO L87 Difference]: Start difference. First operand 3132 states and 9754 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 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) [2022-01-18 09:15:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:30,819 INFO L93 Difference]: Finished difference Result 2592 states and 7900 transitions. [2022-01-18 09:15:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 09:15:30,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 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) Word has length 63 [2022-01-18 09:15:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:30,827 INFO L225 Difference]: With dead ends: 2592 [2022-01-18 09:15:30,827 INFO L226 Difference]: Without dead ends: 1728 [2022-01-18 09:15:30,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:15:30,829 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 249 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:30,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 403 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-01-18 09:15:30,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1680. [2022-01-18 09:15:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 2.969029184038118) internal successors, (4985), 1679 states have internal predecessors, (4985), 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) [2022-01-18 09:15:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 4985 transitions. [2022-01-18 09:15:30,868 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 4985 transitions. Word has length 63 [2022-01-18 09:15:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:30,868 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 4985 transitions. [2022-01-18 09:15:30,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 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) [2022-01-18 09:15:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 4985 transitions. [2022-01-18 09:15:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 09:15:30,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:30,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:30,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 09:15:30,873 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1267708359, now seen corresponding path program 1 times [2022-01-18 09:15:30,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995655042] [2022-01-18 09:15:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:30,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:30,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:30,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995655042] [2022-01-18 09:15:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995655042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:30,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526306257] [2022-01-18 09:15:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:30,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:30,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:30,984 INFO L87 Difference]: Start difference. First operand 1680 states and 4985 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:31,101 INFO L93 Difference]: Finished difference Result 2557 states and 7578 transitions. [2022-01-18 09:15:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 09:15:31,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) Word has length 67 [2022-01-18 09:15:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:31,106 INFO L225 Difference]: With dead ends: 2557 [2022-01-18 09:15:31,106 INFO L226 Difference]: Without dead ends: 1337 [2022-01-18 09:15:31,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:31,107 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 138 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:31,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 530 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-01-18 09:15:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1232. [2022-01-18 09:15:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.9025182778229084) internal successors, (3573), 1231 states have internal predecessors, (3573), 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) [2022-01-18 09:15:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3573 transitions. [2022-01-18 09:15:31,142 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3573 transitions. Word has length 67 [2022-01-18 09:15:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:31,142 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 3573 transitions. [2022-01-18 09:15:31,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3573 transitions. [2022-01-18 09:15:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 09:15:31,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:31,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:31,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 09:15:31,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 680598151, now seen corresponding path program 2 times [2022-01-18 09:15:31,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931527056] [2022-01-18 09:15:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:31,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:31,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931527056] [2022-01-18 09:15:31,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931527056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:31,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:31,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 09:15:31,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582845291] [2022-01-18 09:15:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:31,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 09:15:31,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 09:15:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 09:15:31,313 INFO L87 Difference]: Start difference. First operand 1232 states and 3573 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:31,405 INFO L93 Difference]: Finished difference Result 1980 states and 5779 transitions. [2022-01-18 09:15:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 09:15:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) Word has length 67 [2022-01-18 09:15:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:31,409 INFO L225 Difference]: With dead ends: 1980 [2022-01-18 09:15:31,409 INFO L226 Difference]: Without dead ends: 1268 [2022-01-18 09:15:31,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-18 09:15:31,410 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 115 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:31,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 612 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-01-18 09:15:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1148. [2022-01-18 09:15:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 2.866608544027899) internal successors, (3288), 1147 states have internal predecessors, (3288), 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) [2022-01-18 09:15:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 3288 transitions. [2022-01-18 09:15:31,432 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 3288 transitions. Word has length 67 [2022-01-18 09:15:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:31,433 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 3288 transitions. [2022-01-18 09:15:31,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 3288 transitions. [2022-01-18 09:15:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 09:15:31,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:31,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:31,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 09:15:31,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 563303713, now seen corresponding path program 3 times [2022-01-18 09:15:31,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:31,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307244472] [2022-01-18 09:15:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:31,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:31,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:31,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307244472] [2022-01-18 09:15:31,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307244472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:31,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:31,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:31,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287630669] [2022-01-18 09:15:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:31,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:31,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:31,512 INFO L87 Difference]: Start difference. First operand 1148 states and 3288 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:31,588 INFO L93 Difference]: Finished difference Result 1724 states and 5001 transitions. [2022-01-18 09:15:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 09:15:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) Word has length 67 [2022-01-18 09:15:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:31,591 INFO L225 Difference]: With dead ends: 1724 [2022-01-18 09:15:31,592 INFO L226 Difference]: Without dead ends: 938 [2022-01-18 09:15:31,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:31,593 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 88 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:31,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 392 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-01-18 09:15:31,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2022-01-18 09:15:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 2.767342582710779) internal successors, (2593), 937 states have internal predecessors, (2593), 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) [2022-01-18 09:15:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 2593 transitions. [2022-01-18 09:15:31,609 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 2593 transitions. Word has length 67 [2022-01-18 09:15:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:31,609 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 2593 transitions. [2022-01-18 09:15:31,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 2593 transitions. [2022-01-18 09:15:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 09:15:31,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:15:31,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:31,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 09:15:31,612 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 09:15:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:15:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1914124109, now seen corresponding path program 4 times [2022-01-18 09:15:31,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:15:31,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881516557] [2022-01-18 09:15:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:15:31,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:15:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:15:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 09:15:31,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:15:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881516557] [2022-01-18 09:15:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881516557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:15:31,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:15:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:15:31,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733180988] [2022-01-18 09:15:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:15:31,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:15:31,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:15:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:15:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:15:31,686 INFO L87 Difference]: Start difference. First operand 938 states and 2593 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:15:31,759 INFO L93 Difference]: Finished difference Result 884 states and 2431 transitions. [2022-01-18 09:15:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 09:15:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) Word has length 67 [2022-01-18 09:15:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:15:31,760 INFO L225 Difference]: With dead ends: 884 [2022-01-18 09:15:31,760 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 09:15:31,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 09:15:31,761 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 76 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:15:31,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 474 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:15:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 09:15:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 09:15:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-01-18 09:15:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 09:15:31,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2022-01-18 09:15:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:15:31,762 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 09:15:31,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2022-01-18 09:15:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 09:15:31,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 09:15:31,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 09:15:31,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 09:15:31,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 09:15:31,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 09:15:31,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 09:15:31,768 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 09:15:31,769 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 09:15:31,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 09:15:31,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 09:15:31 BasicIcfg [2022-01-18 09:15:31,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 09:15:31,772 INFO L158 Benchmark]: Toolchain (without parser) took 7000.57ms. Allocated memory was 360.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 303.9MB in the beginning and 1.1GB in the end (delta: -838.3MB). Peak memory consumption was 235.2MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,772 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 360.7MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 09:15:31,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.90ms. Allocated memory was 360.7MB in the beginning and 446.7MB in the end (delta: 86.0MB). Free memory was 303.8MB in the beginning and 408.9MB in the end (delta: -105.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.02ms. Allocated memory is still 446.7MB. Free memory was 408.9MB in the beginning and 406.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,773 INFO L158 Benchmark]: Boogie Preprocessor took 27.60ms. Allocated memory is still 446.7MB. Free memory was 406.8MB in the beginning and 404.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,773 INFO L158 Benchmark]: RCFGBuilder took 383.13ms. Allocated memory is still 446.7MB. Free memory was 404.7MB in the beginning and 390.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,773 INFO L158 Benchmark]: TraceAbstraction took 6105.89ms. Allocated memory was 446.7MB in the beginning and 1.4GB in the end (delta: 985.7MB). Free memory was 390.0MB in the beginning and 1.1GB in the end (delta: -752.2MB). Peak memory consumption was 235.6MB. Max. memory is 16.0GB. [2022-01-18 09:15:31,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 360.7MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 414.90ms. Allocated memory was 360.7MB in the beginning and 446.7MB in the end (delta: 86.0MB). Free memory was 303.8MB in the beginning and 408.9MB in the end (delta: -105.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.02ms. Allocated memory is still 446.7MB. Free memory was 408.9MB in the beginning and 406.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.60ms. Allocated memory is still 446.7MB. Free memory was 406.8MB in the beginning and 404.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 383.13ms. Allocated memory is still 446.7MB. Free memory was 404.7MB in the beginning and 390.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6105.89ms. Allocated memory was 446.7MB in the beginning and 1.4GB in the end (delta: 985.7MB). Free memory was 390.0MB in the beginning and 1.1GB in the end (delta: -752.2MB). Peak memory consumption was 235.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1522 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1522 mSDsluCounter, 5295 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4241 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 693 IncrementalHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 1200 mSDtfsCounter, 693 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6591occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 3771 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 681 NumberOfCodeBlocks, 681 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 09:15:31,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...