/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-deagle/floating_read-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:50:02,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:50:02,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:50:02,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:50:02,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:50:02,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:50:02,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:50:02,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:50:02,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:50:02,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:50:02,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:50:02,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:50:02,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:50:02,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:50:02,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:50:02,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:50:02,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:50:02,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:50:02,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:50:02,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:50:02,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:50:02,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:50:02,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:50:02,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:50:02,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 13:50:02,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 13:50:02,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 13:50:02,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 13:50:02,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 13:50:02,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 13:50:02,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 13:50:02,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 13:50:02,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 13:50:02,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 13:50:02,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 13:50:02,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 13:50:02,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 13:50:02,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 13:50:02,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:50:02,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:50:02,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:50:02,515 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 13:50:02,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:50:02,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:50:02,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:50:02,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:50:02,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:50:02,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:50:02,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:50:02,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:50:02,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:50:02,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:50:02,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:50:02,529 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:50:02,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:50:02,530 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:50:02,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:50:02,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:50:02,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:50:02,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:50:02,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:50:02,708 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:50:02,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/floating_read-25.i [2022-01-18 13:50:02,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38246e2a/ee8a90c69b33442ba14c037d2425a035/FLAG148eb2d78 [2022-01-18 13:50:03,182 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:50:03,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-25.i [2022-01-18 13:50:03,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38246e2a/ee8a90c69b33442ba14c037d2425a035/FLAG148eb2d78 [2022-01-18 13:50:03,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38246e2a/ee8a90c69b33442ba14c037d2425a035 [2022-01-18 13:50:03,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:50:03,214 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:50:03,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:50:03,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:50:03,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:50:03,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6730f107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03, skipping insertion in model container [2022-01-18 13:50:03,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:50:03,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:50:03,492 WARN L1533 CHandler]: Possible shadowing of function thread [2022-01-18 13:50:03,499 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-deagle/floating_read-25.i[31197,31210] [2022-01-18 13:50:03,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:50:03,509 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:50:03,528 WARN L1533 CHandler]: Possible shadowing of function thread [2022-01-18 13:50:03,530 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-deagle/floating_read-25.i[31197,31210] [2022-01-18 13:50:03,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:50:03,560 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:50:03,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03 WrapperNode [2022-01-18 13:50:03,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:50:03,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:50:03,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:50:03,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:50:03,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,587 INFO L137 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-01-18 13:50:03,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:50:03,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:50:03,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:50:03,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:50:03,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:50:03,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:50:03,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:50:03,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:50:03,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (1/1) ... [2022-01-18 13:50:03,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:50:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:03,642 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 13:50:03,667 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 13:50:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:50:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:50:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 13:50:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:50:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:50:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:50:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:50:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-01-18 13:50:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-01-18 13:50:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 13:50:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:50:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:50:03,688 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 13:50:03,787 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:50:03,788 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:50:03,884 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:50:03,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:50:03,887 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 13:50:03,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:50:03 BoogieIcfgContainer [2022-01-18 13:50:03,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:50:03,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:50:03,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:50:03,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:50:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:50:03" (1/3) ... [2022-01-18 13:50:03,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4062b3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:50:03, skipping insertion in model container [2022-01-18 13:50:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:50:03" (2/3) ... [2022-01-18 13:50:03,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4062b3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:50:03, skipping insertion in model container [2022-01-18 13:50:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:50:03" (3/3) ... [2022-01-18 13:50:03,894 INFO L111 eAbstractionObserver]: Analyzing ICFG floating_read-25.i [2022-01-18 13:50:03,897 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:50:03,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:50:03,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:50:03,898 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:50:03,913 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,914 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,915 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,916 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,918 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,918 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,918 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,918 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,919 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:03,921 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 13:50:03,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:50:03,951 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 13:50:03,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:03,958 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 59 transitions, 126 flow [2022-01-18 13:50:03,978 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 106 states, 103 states have (on average 1.6699029126213591) internal successors, (172), 105 states have internal predecessors, (172), 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 13:50:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.6699029126213591) internal successors, (172), 105 states have internal predecessors, (172), 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 13:50:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:03,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:03,984 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] [2022-01-18 13:50:03,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1781753840, now seen corresponding path program 1 times [2022-01-18 13:50:03,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:03,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499708421] [2022-01-18 13:50:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:03,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:04,094 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 13:50:04,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:04,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499708421] [2022-01-18 13:50:04,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499708421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:04,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:04,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:50:04,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351430254] [2022-01-18 13:50:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:04,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:50:04,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:50:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:04,118 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.6699029126213591) internal successors, (172), 105 states have internal predecessors, (172), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:04,130 INFO L93 Difference]: Finished difference Result 106 states and 165 transitions. [2022-01-18 13:50:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:50:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:04,137 INFO L225 Difference]: With dead ends: 106 [2022-01-18 13:50:04,137 INFO L226 Difference]: Without dead ends: 82 [2022-01-18 13:50:04,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:04,145 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:04,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-18 13:50:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-01-18 13:50:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.5125) internal successors, (121), 81 states have internal predecessors, (121), 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 13:50:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 121 transitions. [2022-01-18 13:50:04,182 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 121 transitions. Word has length 23 [2022-01-18 13:50:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:04,183 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 121 transitions. [2022-01-18 13:50:04,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 121 transitions. [2022-01-18 13:50:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:04,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:04,184 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] [2022-01-18 13:50:04,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:50:04,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1781754801, now seen corresponding path program 1 times [2022-01-18 13:50:04,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:04,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553164167] [2022-01-18 13:50:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:04,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:04,255 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 13:50:04,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:04,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553164167] [2022-01-18 13:50:04,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553164167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:04,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:04,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:04,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933750315] [2022-01-18 13:50:04,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:04,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:04,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:04,258 INFO L87 Difference]: Start difference. First operand 82 states and 121 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:04,285 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2022-01-18 13:50:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:04,287 INFO L225 Difference]: With dead ends: 79 [2022-01-18 13:50:04,287 INFO L226 Difference]: Without dead ends: 79 [2022-01-18 13:50:04,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:04,288 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:04,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 60 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-18 13:50:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-01-18 13:50:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 78 states have internal predecessors, (118), 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 13:50:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2022-01-18 13:50:04,294 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 23 [2022-01-18 13:50:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:04,294 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2022-01-18 13:50:04,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2022-01-18 13:50:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:50:04,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:04,295 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] [2022-01-18 13:50:04,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:50:04,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash -315270955, now seen corresponding path program 1 times [2022-01-18 13:50:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:04,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942773925] [2022-01-18 13:50:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:04,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:50:04,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:04,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942773925] [2022-01-18 13:50:04,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942773925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:04,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:04,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081451384] [2022-01-18 13:50:04,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:04,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:04,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:04,360 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:04,367 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2022-01-18 13:50:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-01-18 13:50:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:04,368 INFO L225 Difference]: With dead ends: 73 [2022-01-18 13:50:04,368 INFO L226 Difference]: Without dead ends: 73 [2022-01-18 13:50:04,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:04,369 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:04,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-18 13:50:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-18 13:50:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 72 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:50:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 106 transitions. [2022-01-18 13:50:04,373 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 106 transitions. Word has length 33 [2022-01-18 13:50:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:04,374 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 106 transitions. [2022-01-18 13:50:04,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 106 transitions. [2022-01-18 13:50:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 13:50:04,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:04,375 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] [2022-01-18 13:50:04,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:50:04,375 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash 906942983, now seen corresponding path program 1 times [2022-01-18 13:50:04,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851825954] [2022-01-18 13:50:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:04,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:04,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:04,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851825954] [2022-01-18 13:50:04,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851825954] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:04,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679773741] [2022-01-18 13:50:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:04,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:04,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:04,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 13:50:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:04,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:50:04,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:04,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:04,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679773741] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:04,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:04,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:50:04,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146977113] [2022-01-18 13:50:04,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:04,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:50:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:50:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:50:04,727 INFO L87 Difference]: Start difference. First operand 73 states and 106 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:04,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:04,803 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2022-01-18 13:50:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 13:50:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 13:50:04,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:04,804 INFO L225 Difference]: With dead ends: 61 [2022-01-18 13:50:04,804 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:50:04,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 13:50:04,805 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:04,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 129 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:50:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:50:04,806 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 13:50:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:50:04,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-01-18 13:50:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:04,806 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:50:04,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:50:04,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:50:04,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:50:04,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:05,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:05,019 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-18 13:50:05,019 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:50:05,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:50:05,022 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 13:50:05,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:05,022 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 59 transitions, 126 flow [2022-01-18 13:50:05,027 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 90 states have internal predecessors, (140), 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 13:50:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 90 states have internal predecessors, (140), 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 13:50:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 13:50:05,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,028 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 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 13:50:05,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:50:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1968634815, now seen corresponding path program 1 times [2022-01-18 13:50:05,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930140267] [2022-01-18 13:50:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:05,042 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:50:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:05,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:50:05,062 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:50:05,062 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:50:05,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:50:05,062 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:50:05,062 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:50:05,063 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:50:05,063 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 13:50:05,068 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,068 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,068 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,069 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,070 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,071 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,072 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,073 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,073 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,073 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,073 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,073 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,074 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:50:05,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:50:05,079 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 13:50:05,079 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:05,080 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 66 transitions, 150 flow [2022-01-18 13:50:05,116 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 574 states, 570 states have (on average 2.501754385964912) internal successors, (1426), 573 states have internal predecessors, (1426), 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 13:50:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 570 states have (on average 2.501754385964912) internal successors, (1426), 573 states have internal predecessors, (1426), 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 13:50:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:05,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,119 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] [2022-01-18 13:50:05,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 775345522, now seen corresponding path program 1 times [2022-01-18 13:50:05,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806964751] [2022-01-18 13:50:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,157 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 13:50:05,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806964751] [2022-01-18 13:50:05,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806964751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:05,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:05,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:50:05,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433386925] [2022-01-18 13:50:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:05,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:50:05,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:50:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:05,159 INFO L87 Difference]: Start difference. First operand has 574 states, 570 states have (on average 2.501754385964912) internal successors, (1426), 573 states have internal predecessors, (1426), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:05,171 INFO L93 Difference]: Finished difference Result 574 states and 1383 transitions. [2022-01-18 13:50:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:50:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:05,176 INFO L225 Difference]: With dead ends: 574 [2022-01-18 13:50:05,176 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 13:50:05,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:05,177 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:05,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 13:50:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2022-01-18 13:50:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 427 states have (on average 2.339578454332553) internal successors, (999), 429 states have internal predecessors, (999), 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 13:50:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 999 transitions. [2022-01-18 13:50:05,211 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 999 transitions. Word has length 23 [2022-01-18 13:50:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:05,212 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 999 transitions. [2022-01-18 13:50:05,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 999 transitions. [2022-01-18 13:50:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:05,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,212 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] [2022-01-18 13:50:05,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 13:50:05,213 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 775346483, now seen corresponding path program 1 times [2022-01-18 13:50:05,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359882576] [2022-01-18 13:50:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,235 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 13:50:05,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359882576] [2022-01-18 13:50:05,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359882576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:05,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:05,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:05,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679623424] [2022-01-18 13:50:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:05,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:05,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:05,237 INFO L87 Difference]: Start difference. First operand 430 states and 999 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:05,252 INFO L93 Difference]: Finished difference Result 427 states and 996 transitions. [2022-01-18 13:50:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:05,256 INFO L225 Difference]: With dead ends: 427 [2022-01-18 13:50:05,256 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 13:50:05,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:05,259 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:05,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 74 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 13:50:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-01-18 13:50:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 425 states have (on average 2.343529411764706) internal successors, (996), 426 states have internal predecessors, (996), 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 13:50:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 996 transitions. [2022-01-18 13:50:05,284 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 996 transitions. Word has length 23 [2022-01-18 13:50:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:05,284 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 996 transitions. [2022-01-18 13:50:05,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 996 transitions. [2022-01-18 13:50:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:50:05,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,285 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] [2022-01-18 13:50:05,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 13:50:05,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1083506660, now seen corresponding path program 1 times [2022-01-18 13:50:05,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672449352] [2022-01-18 13:50:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:50:05,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:05,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672449352] [2022-01-18 13:50:05,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672449352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:05,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:05,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:05,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313638170] [2022-01-18 13:50:05,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:05,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:05,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:05,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:05,325 INFO L87 Difference]: Start difference. First operand 427 states and 996 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:05,334 INFO L93 Difference]: Finished difference Result 403 states and 930 transitions. [2022-01-18 13:50:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-01-18 13:50:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:05,336 INFO L225 Difference]: With dead ends: 403 [2022-01-18 13:50:05,336 INFO L226 Difference]: Without dead ends: 403 [2022-01-18 13:50:05,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:05,338 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:05,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-18 13:50:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-01-18 13:50:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 2.319201995012469) internal successors, (930), 402 states have internal predecessors, (930), 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 13:50:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 930 transitions. [2022-01-18 13:50:05,348 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 930 transitions. Word has length 33 [2022-01-18 13:50:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:05,348 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 930 transitions. [2022-01-18 13:50:05,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 930 transitions. [2022-01-18 13:50:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 13:50:05,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,352 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] [2022-01-18 13:50:05,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 13:50:05,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2017126046, now seen corresponding path program 1 times [2022-01-18 13:50:05,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404477163] [2022-01-18 13:50:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:05,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:05,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404477163] [2022-01-18 13:50:05,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404477163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:05,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756466239] [2022-01-18 13:50:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:05,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:05,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:05,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 13:50:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:50:05,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:05,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756466239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:05,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:05,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:50:05,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298559603] [2022-01-18 13:50:05,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:05,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:50:05,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:50:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:50:05,579 INFO L87 Difference]: Start difference. First operand 403 states and 930 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:05,642 INFO L93 Difference]: Finished difference Result 301 states and 675 transitions. [2022-01-18 13:50:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:50:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 13:50:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:05,643 INFO L225 Difference]: With dead ends: 301 [2022-01-18 13:50:05,643 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:50:05,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:50:05,644 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 139 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:05,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 201 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:50:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:50:05,644 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 13:50:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:50:05,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-01-18 13:50:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:05,645 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:50:05,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:50:05,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:50:05,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:50:05,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 13:50:05,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-18 13:50:05,860 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-18 13:50:05,860 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:50:05,860 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:50:05,861 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 13:50:05,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:05,862 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 66 transitions, 150 flow [2022-01-18 13:50:05,869 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 481 states, 480 states have (on average 2.40625) internal successors, (1155), 480 states have internal predecessors, (1155), 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 13:50:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 481 states, 480 states have (on average 2.40625) internal successors, (1155), 480 states have internal predecessors, (1155), 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 13:50:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 13:50:05,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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 13:50:05,871 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:50:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 286308789, now seen corresponding path program 1 times [2022-01-18 13:50:05,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704955964] [2022-01-18 13:50:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:05,880 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:50:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:05,890 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:50:05,890 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:50:05,890 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:50:05,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 13:50:05,890 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:50:05,890 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:50:05,891 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:50:05,891 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 13:50:05,895 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,896 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,897 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,898 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,899 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,900 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,901 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,902 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,902 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,902 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:05,903 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 13:50:05,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:50:05,904 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 13:50:05,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:05,905 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 73 transitions, 176 flow [2022-01-18 13:50:05,980 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3382 states, 3377 states have (on average 3.3432040272431154) internal successors, (11290), 3381 states have internal predecessors, (11290), 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 13:50:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 3382 states, 3377 states have (on average 3.3432040272431154) internal successors, (11290), 3381 states have internal predecessors, (11290), 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 13:50:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:05,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:05,988 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] [2022-01-18 13:50:05,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash 898626907, now seen corresponding path program 1 times [2022-01-18 13:50:05,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711473544] [2022-01-18 13:50:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:05,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:05,999 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 13:50:05,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:06,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711473544] [2022-01-18 13:50:06,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711473544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:06,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:06,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:50:06,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597590752] [2022-01-18 13:50:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:06,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:50:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:50:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:06,009 INFO L87 Difference]: Start difference. First operand has 3382 states, 3377 states have (on average 3.3432040272431154) internal successors, (11290), 3381 states have internal predecessors, (11290), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:06,040 INFO L93 Difference]: Finished difference Result 3382 states and 11031 transitions. [2022-01-18 13:50:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:50:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:06,056 INFO L225 Difference]: With dead ends: 3382 [2022-01-18 13:50:06,056 INFO L226 Difference]: Without dead ends: 2518 [2022-01-18 13:50:06,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:06,057 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:06,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-18 13:50:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-18 13:50:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2514 states have (on average 3.184964200477327) internal successors, (8007), 2517 states have internal predecessors, (8007), 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 13:50:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 8007 transitions. [2022-01-18 13:50:06,115 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 8007 transitions. Word has length 23 [2022-01-18 13:50:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:06,115 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 8007 transitions. [2022-01-18 13:50:06,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 8007 transitions. [2022-01-18 13:50:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:06,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:06,116 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] [2022-01-18 13:50:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 13:50:06,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 898627868, now seen corresponding path program 1 times [2022-01-18 13:50:06,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:06,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492328479] [2022-01-18 13:50:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:06,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:06,129 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 13:50:06,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492328479] [2022-01-18 13:50:06,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492328479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:06,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:06,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:06,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685436063] [2022-01-18 13:50:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:06,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:06,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:06,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:06,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:06,131 INFO L87 Difference]: Start difference. First operand 2518 states and 8007 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:06,153 INFO L93 Difference]: Finished difference Result 2515 states and 8004 transitions. [2022-01-18 13:50:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:06,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:06,164 INFO L225 Difference]: With dead ends: 2515 [2022-01-18 13:50:06,164 INFO L226 Difference]: Without dead ends: 2515 [2022-01-18 13:50:06,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:06,165 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:06,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-01-18 13:50:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2515. [2022-01-18 13:50:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2512 states have (on average 3.1863057324840764) internal successors, (8004), 2514 states have internal predecessors, (8004), 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 13:50:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 8004 transitions. [2022-01-18 13:50:06,227 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 8004 transitions. Word has length 23 [2022-01-18 13:50:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:06,227 INFO L470 AbstractCegarLoop]: Abstraction has 2515 states and 8004 transitions. [2022-01-18 13:50:06,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 8004 transitions. [2022-01-18 13:50:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:50:06,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:06,229 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] [2022-01-18 13:50:06,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 13:50:06,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1823512938, now seen corresponding path program 1 times [2022-01-18 13:50:06,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553618321] [2022-01-18 13:50:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:06,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:50:06,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:06,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553618321] [2022-01-18 13:50:06,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553618321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:06,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:06,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:06,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256322314] [2022-01-18 13:50:06,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:06,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:06,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:06,258 INFO L87 Difference]: Start difference. First operand 2515 states and 8004 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:06,279 INFO L93 Difference]: Finished difference Result 2437 states and 7722 transitions. [2022-01-18 13:50:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-01-18 13:50:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:06,292 INFO L225 Difference]: With dead ends: 2437 [2022-01-18 13:50:06,292 INFO L226 Difference]: Without dead ends: 2437 [2022-01-18 13:50:06,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:06,293 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:06,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-01-18 13:50:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2437. [2022-01-18 13:50:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2434 states have (on average 3.172555464256368) internal successors, (7722), 2436 states have internal predecessors, (7722), 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 13:50:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 7722 transitions. [2022-01-18 13:50:06,359 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 7722 transitions. Word has length 33 [2022-01-18 13:50:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:06,360 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 7722 transitions. [2022-01-18 13:50:06,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 7722 transitions. [2022-01-18 13:50:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 13:50:06,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:06,361 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] [2022-01-18 13:50:06,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 13:50:06,361 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1943735733, now seen corresponding path program 1 times [2022-01-18 13:50:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:06,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603717328] [2022-01-18 13:50:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:06,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:06,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603717328] [2022-01-18 13:50:06,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603717328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673831757] [2022-01-18 13:50:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:06,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:06,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:06,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:06,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 13:50:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:06,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:50:06,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:06,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673831757] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:06,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-01-18 13:50:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416559772] [2022-01-18 13:50:06,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:06,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 13:50:06,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 13:50:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-18 13:50:06,631 INFO L87 Difference]: Start difference. First operand 2437 states and 7722 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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 13:50:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:07,010 INFO L93 Difference]: Finished difference Result 3199 states and 9906 transitions. [2022-01-18 13:50:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:50:07,011 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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 36 [2022-01-18 13:50:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:07,023 INFO L225 Difference]: With dead ends: 3199 [2022-01-18 13:50:07,023 INFO L226 Difference]: Without dead ends: 3001 [2022-01-18 13:50:07,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=492, Invalid=1230, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:50:07,024 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 603 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:07,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 554 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:50:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-01-18 13:50:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2821. [2022-01-18 13:50:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2819 states have (on average 3.1234480312167436) internal successors, (8805), 2820 states have internal predecessors, (8805), 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 13:50:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 8805 transitions. [2022-01-18 13:50:07,086 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 8805 transitions. Word has length 36 [2022-01-18 13:50:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:07,087 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 8805 transitions. [2022-01-18 13:50:07,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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 13:50:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 8805 transitions. [2022-01-18 13:50:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 13:50:07,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:07,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 13:50:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:07,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:07,297 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -569723489, now seen corresponding path program 1 times [2022-01-18 13:50:07,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375055141] [2022-01-18 13:50:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:07,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:07,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375055141] [2022-01-18 13:50:07,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375055141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830675858] [2022-01-18 13:50:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:07,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:07,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:07,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:07,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 13:50:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:07,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 13:50:07,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:07,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830675858] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:07,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:07,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 13:50:07,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391112917] [2022-01-18 13:50:07,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:50:07,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:50:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:50:07,521 INFO L87 Difference]: Start difference. First operand 2821 states and 8805 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 13:50:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:07,580 INFO L93 Difference]: Finished difference Result 2155 states and 6597 transitions. [2022-01-18 13:50:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 13:50:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 46 [2022-01-18 13:50:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:07,581 INFO L225 Difference]: With dead ends: 2155 [2022-01-18 13:50:07,581 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:50:07,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:50:07,581 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 205 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:07,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 373 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:50:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:50:07,582 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 13:50:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:50:07,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2022-01-18 13:50:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:07,582 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:50:07,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 13:50:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:50:07,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:50:07,582 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:50:07,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:07,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 13:50:07,798 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-18 13:50:07,798 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:50:07,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:50:07,799 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 13:50:07,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:07,800 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 73 transitions, 176 flow [2022-01-18 13:50:07,845 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2821 states, 2820 states have (on average 3.2606382978723403) internal successors, (9195), 2820 states have internal predecessors, (9195), 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 13:50:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 2821 states, 2820 states have (on average 3.2606382978723403) internal successors, (9195), 2820 states have internal predecessors, (9195), 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 13:50:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-18 13:50:07,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:07,850 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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 13:50:07,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:50:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 176735389, now seen corresponding path program 1 times [2022-01-18 13:50:07,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:07,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896113099] [2022-01-18 13:50:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:07,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:07,860 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:50:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:07,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:50:07,884 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:50:07,884 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:50:07,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 13:50:07,885 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:50:07,885 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:50:07,885 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:50:07,885 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 13:50:07,889 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,889 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,889 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,889 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,890 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,891 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,892 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,893 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,895 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:07,912 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 13:50:07,913 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:50:07,913 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 13:50:07,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:07,913 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 80 transitions, 204 flow [2022-01-18 13:50:08,417 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20230 states, 20224 states have (on average 4.178896360759493) internal successors, (84514), 20229 states have internal predecessors, (84514), 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 13:50:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 20230 states, 20224 states have (on average 4.178896360759493) internal successors, (84514), 20229 states have internal predecessors, (84514), 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 13:50:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:08,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:08,455 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] [2022-01-18 13:50:08,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2143369301, now seen corresponding path program 1 times [2022-01-18 13:50:08,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:08,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201053566] [2022-01-18 13:50:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:08,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:08,466 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 13:50:08,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:08,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201053566] [2022-01-18 13:50:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201053566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:08,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:08,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:50:08,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468821704] [2022-01-18 13:50:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:08,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:50:08,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:50:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:08,505 INFO L87 Difference]: Start difference. First operand has 20230 states, 20224 states have (on average 4.178896360759493) internal successors, (84514), 20229 states have internal predecessors, (84514), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:08,648 INFO L93 Difference]: Finished difference Result 20230 states and 82959 transitions. [2022-01-18 13:50:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:50:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:08,712 INFO L225 Difference]: With dead ends: 20230 [2022-01-18 13:50:08,712 INFO L226 Difference]: Without dead ends: 15046 [2022-01-18 13:50:08,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:08,712 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:08,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15046 states. [2022-01-18 13:50:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15046 to 15046. [2022-01-18 13:50:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15046 states, 15041 states have (on average 4.022006515524234) internal successors, (60495), 15045 states have internal predecessors, (60495), 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 13:50:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15046 states to 15046 states and 60495 transitions. [2022-01-18 13:50:09,533 INFO L78 Accepts]: Start accepts. Automaton has 15046 states and 60495 transitions. Word has length 23 [2022-01-18 13:50:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:09,534 INFO L470 AbstractCegarLoop]: Abstraction has 15046 states and 60495 transitions. [2022-01-18 13:50:09,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15046 states and 60495 transitions. [2022-01-18 13:50:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:09,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:09,534 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] [2022-01-18 13:50:09,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 13:50:09,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:09,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2143368340, now seen corresponding path program 1 times [2022-01-18 13:50:09,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:09,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441620433] [2022-01-18 13:50:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:09,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:09,550 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 13:50:09,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:09,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441620433] [2022-01-18 13:50:09,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441620433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:09,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:09,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:09,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986657825] [2022-01-18 13:50:09,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:09,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:09,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:09,552 INFO L87 Difference]: Start difference. First operand 15046 states and 60495 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:09,798 INFO L93 Difference]: Finished difference Result 15043 states and 60492 transitions. [2022-01-18 13:50:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:09,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:09,881 INFO L225 Difference]: With dead ends: 15043 [2022-01-18 13:50:09,882 INFO L226 Difference]: Without dead ends: 15043 [2022-01-18 13:50:09,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:09,882 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:09,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 94 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15043 states. [2022-01-18 13:50:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15043 to 15043. [2022-01-18 13:50:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15043 states, 15039 states have (on average 4.022341911031319) internal successors, (60492), 15042 states have internal predecessors, (60492), 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 13:50:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 60492 transitions. [2022-01-18 13:50:10,527 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 60492 transitions. Word has length 23 [2022-01-18 13:50:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:10,527 INFO L470 AbstractCegarLoop]: Abstraction has 15043 states and 60492 transitions. [2022-01-18 13:50:10,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 60492 transitions. [2022-01-18 13:50:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:50:10,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:10,527 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] [2022-01-18 13:50:10,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 13:50:10,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash -184146753, now seen corresponding path program 1 times [2022-01-18 13:50:10,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021897768] [2022-01-18 13:50:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:10,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:50:10,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:10,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021897768] [2022-01-18 13:50:10,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021897768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:10,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:10,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:10,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984118683] [2022-01-18 13:50:10,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:10,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:10,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:10,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:10,544 INFO L87 Difference]: Start difference. First operand 15043 states and 60492 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:10,630 INFO L93 Difference]: Finished difference Result 14803 states and 59400 transitions. [2022-01-18 13:50:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-01-18 13:50:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:10,849 INFO L225 Difference]: With dead ends: 14803 [2022-01-18 13:50:10,849 INFO L226 Difference]: Without dead ends: 14803 [2022-01-18 13:50:10,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:10,851 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:10,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 88 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14803 states. [2022-01-18 13:50:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14803 to 14803. [2022-01-18 13:50:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14803 states, 14799 states have (on average 4.0137847151834585) internal successors, (59400), 14802 states have internal predecessors, (59400), 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 13:50:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14803 states to 14803 states and 59400 transitions. [2022-01-18 13:50:11,344 INFO L78 Accepts]: Start accepts. Automaton has 14803 states and 59400 transitions. Word has length 33 [2022-01-18 13:50:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:11,345 INFO L470 AbstractCegarLoop]: Abstraction has 14803 states and 59400 transitions. [2022-01-18 13:50:11,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 14803 states and 59400 transitions. [2022-01-18 13:50:11,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 13:50:11,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:11,345 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] [2022-01-18 13:50:11,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 13:50:11,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:11,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1187205763, now seen corresponding path program 1 times [2022-01-18 13:50:11,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:11,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891362033] [2022-01-18 13:50:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:11,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:11,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891362033] [2022-01-18 13:50:11,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891362033] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092439016] [2022-01-18 13:50:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:11,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:11,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:11,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 13:50:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:50:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:11,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092439016] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:11,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:11,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:50:11,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472988563] [2022-01-18 13:50:11,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:11,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:50:11,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:50:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:50:11,576 INFO L87 Difference]: Start difference. First operand 14803 states and 59400 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:11,785 INFO L93 Difference]: Finished difference Result 14701 states and 59145 transitions. [2022-01-18 13:50:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:50:11,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 13:50:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:11,839 INFO L225 Difference]: With dead ends: 14701 [2022-01-18 13:50:11,839 INFO L226 Difference]: Without dead ends: 14701 [2022-01-18 13:50:11,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:50:11,840 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 181 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:11,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 230 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14701 states. [2022-01-18 13:50:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14701 to 14701. [2022-01-18 13:50:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14701 states, 14699 states have (on average 4.023743111776311) internal successors, (59145), 14700 states have internal predecessors, (59145), 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 13:50:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14701 states to 14701 states and 59145 transitions. [2022-01-18 13:50:12,312 INFO L78 Accepts]: Start accepts. Automaton has 14701 states and 59145 transitions. Word has length 36 [2022-01-18 13:50:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:12,312 INFO L470 AbstractCegarLoop]: Abstraction has 14701 states and 59145 transitions. [2022-01-18 13:50:12,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14701 states and 59145 transitions. [2022-01-18 13:50:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 13:50:12,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:12,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 13:50:12,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:12,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1944197442, now seen corresponding path program 1 times [2022-01-18 13:50:12,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:12,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533466485] [2022-01-18 13:50:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:12,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:12,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533466485] [2022-01-18 13:50:12,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533466485] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853380382] [2022-01-18 13:50:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:12,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:12,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:12,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 13:50:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:50:12,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:12,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:12,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853380382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:12,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:12,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-01-18 13:50:12,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637780958] [2022-01-18 13:50:12,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:12,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 13:50:12,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 13:50:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 13:50:12,896 INFO L87 Difference]: Start difference. First operand 14701 states and 59145 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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 13:50:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:13,316 INFO L93 Difference]: Finished difference Result 20731 states and 81477 transitions. [2022-01-18 13:50:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 13:50:13,317 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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 56 [2022-01-18 13:50:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:13,376 INFO L225 Difference]: With dead ends: 20731 [2022-01-18 13:50:13,376 INFO L226 Difference]: Without dead ends: 20137 [2022-01-18 13:50:13,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2022-01-18 13:50:13,377 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 620 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:13,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 604 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:50:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2022-01-18 13:50:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 18841. [2022-01-18 13:50:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18841 states, 18839 states have (on average 3.964223154095228) internal successors, (74682), 18840 states have internal predecessors, (74682), 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 13:50:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18841 states to 18841 states and 74682 transitions. [2022-01-18 13:50:13,868 INFO L78 Accepts]: Start accepts. Automaton has 18841 states and 74682 transitions. Word has length 56 [2022-01-18 13:50:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 18841 states and 74682 transitions. [2022-01-18 13:50:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 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 13:50:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 18841 states and 74682 transitions. [2022-01-18 13:50:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 13:50:13,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:13,874 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 13:50:13,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:14,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:14,087 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1730070023, now seen corresponding path program 1 times [2022-01-18 13:50:14,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:14,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098533854] [2022-01-18 13:50:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:14,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:14,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098533854] [2022-01-18 13:50:14,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098533854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:14,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589643417] [2022-01-18 13:50:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:14,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:14,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:14,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:14,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 13:50:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:14,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 13:50:14,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:14,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589643417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:14,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:14,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 13:50:14,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775738158] [2022-01-18 13:50:14,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:14,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:50:14,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:50:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:50:14,509 INFO L87 Difference]: Start difference. First operand 18841 states and 74682 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 13:50:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:15,304 INFO L93 Difference]: Finished difference Result 23485 states and 91584 transitions. [2022-01-18 13:50:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:50:15,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 56 [2022-01-18 13:50:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:15,368 INFO L225 Difference]: With dead ends: 23485 [2022-01-18 13:50:15,368 INFO L226 Difference]: Without dead ends: 21703 [2022-01-18 13:50:15,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=637, Invalid=2333, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:50:15,369 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 655 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:15,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 1316 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:50:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21703 states. [2022-01-18 13:50:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21703 to 18265. [2022-01-18 13:50:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18265 states, 18263 states have (on average 3.9451897278650825) internal successors, (72051), 18264 states have internal predecessors, (72051), 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 13:50:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18265 states to 18265 states and 72051 transitions. [2022-01-18 13:50:15,882 INFO L78 Accepts]: Start accepts. Automaton has 18265 states and 72051 transitions. Word has length 56 [2022-01-18 13:50:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:15,882 INFO L470 AbstractCegarLoop]: Abstraction has 18265 states and 72051 transitions. [2022-01-18 13:50:15,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 13:50:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18265 states and 72051 transitions. [2022-01-18 13:50:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 13:50:15,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:15,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 13:50:15,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 13:50:16,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:16,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1109338339, now seen corresponding path program 1 times [2022-01-18 13:50:16,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:16,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268910398] [2022-01-18 13:50:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:16,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:16,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:16,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268910398] [2022-01-18 13:50:16,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268910398] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472728038] [2022-01-18 13:50:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:16,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:16,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:16,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 13:50:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:16,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 13:50:16,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:16,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:16,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472728038] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:16,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:16,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2022-01-18 13:50:16,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412138663] [2022-01-18 13:50:16,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:16,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 13:50:16,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 13:50:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-01-18 13:50:16,462 INFO L87 Difference]: Start difference. First operand 18265 states and 72051 transitions. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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 13:50:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:17,460 INFO L93 Difference]: Finished difference Result 16051 states and 61647 transitions. [2022-01-18 13:50:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:50:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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 56 [2022-01-18 13:50:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:17,461 INFO L225 Difference]: With dead ends: 16051 [2022-01-18 13:50:17,461 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:50:17,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=4676, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 13:50:17,463 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1635 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:17,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 1542 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:50:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:50:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:50:17,463 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 13:50:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:50:17,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2022-01-18 13:50:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:17,463 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:50:17,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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 13:50:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:50:17,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:50:17,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:50:17,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 13:50:17,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 13:50:17,679 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:50:17,679 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:50:17,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:50:17,681 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 13:50:17,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:17,682 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 80 transitions, 204 flow [2022-01-18 13:50:18,114 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16861 states, 16860 states have (on average 4.100533807829182) internal successors, (69135), 16860 states have internal predecessors, (69135), 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 13:50:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 16861 states, 16860 states have (on average 4.100533807829182) internal successors, (69135), 16860 states have internal predecessors, (69135), 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 13:50:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 13:50:18,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:18,148 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 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 13:50:18,148 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:50:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1693116247, now seen corresponding path program 1 times [2022-01-18 13:50:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483834212] [2022-01-18 13:50:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:18,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:18,160 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:50:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:50:18,169 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:50:18,169 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:50:18,169 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:50:18,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 13:50:18,170 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:50:18,170 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:50:18,170 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:50:18,170 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,194 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,195 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,196 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,197 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,198 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,199 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,200 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,201 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:50:18,203 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-18 13:50:18,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:50:18,205 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 13:50:18,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:50:18,206 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 87 transitions, 234 flow [2022-01-18 13:50:21,605 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 121318 states, 121311 states have (on average 5.01271937417052) internal successors, (608098), 121317 states have internal predecessors, (608098), 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 13:50:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 121318 states, 121311 states have (on average 5.01271937417052) internal successors, (608098), 121317 states have internal predecessors, (608098), 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 13:50:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:21,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:21,798 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] [2022-01-18 13:50:21,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash 239291490, now seen corresponding path program 1 times [2022-01-18 13:50:21,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523195438] [2022-01-18 13:50:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:21,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:21,811 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 13:50:21,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523195438] [2022-01-18 13:50:21,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523195438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:21,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:21,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:50:21,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540120020] [2022-01-18 13:50:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:50:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:50:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:22,000 INFO L87 Difference]: Start difference. First operand has 121318 states, 121311 states have (on average 5.01271937417052) internal successors, (608098), 121317 states have internal predecessors, (608098), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:23,691 INFO L93 Difference]: Finished difference Result 121318 states and 598767 transitions. [2022-01-18 13:50:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:50:23,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:24,184 INFO L225 Difference]: With dead ends: 121318 [2022-01-18 13:50:24,185 INFO L226 Difference]: Without dead ends: 90214 [2022-01-18 13:50:24,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:50:24,185 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:24,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90214 states. [2022-01-18 13:50:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90214 to 90214. [2022-01-18 13:50:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90214 states, 90208 states have (on average 4.856143579283434) internal successors, (438063), 90213 states have internal predecessors, (438063), 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 13:50:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90214 states to 90214 states and 438063 transitions. [2022-01-18 13:50:27,861 INFO L78 Accepts]: Start accepts. Automaton has 90214 states and 438063 transitions. Word has length 23 [2022-01-18 13:50:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:27,861 INFO L470 AbstractCegarLoop]: Abstraction has 90214 states and 438063 transitions. [2022-01-18 13:50:27,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:50:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 90214 states and 438063 transitions. [2022-01-18 13:50:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:50:27,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:27,861 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] [2022-01-18 13:50:27,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 13:50:27,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash 239292451, now seen corresponding path program 1 times [2022-01-18 13:50:27,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:27,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467762369] [2022-01-18 13:50:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:27,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:27,876 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 13:50:27,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467762369] [2022-01-18 13:50:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467762369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:27,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:27,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:27,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273483438] [2022-01-18 13:50:27,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:27,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:27,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:27,877 INFO L87 Difference]: Start difference. First operand 90214 states and 438063 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:29,021 INFO L93 Difference]: Finished difference Result 90211 states and 438060 transitions. [2022-01-18 13:50:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:50:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:30,120 INFO L225 Difference]: With dead ends: 90211 [2022-01-18 13:50:30,120 INFO L226 Difference]: Without dead ends: 90211 [2022-01-18 13:50:30,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:30,121 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:30,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 104 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90211 states. [2022-01-18 13:50:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90211 to 90211. [2022-01-18 13:50:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90211 states, 90206 states have (on average 4.856217989934151) internal successors, (438060), 90210 states have internal predecessors, (438060), 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 13:50:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90211 states to 90211 states and 438060 transitions. [2022-01-18 13:50:33,467 INFO L78 Accepts]: Start accepts. Automaton has 90211 states and 438060 transitions. Word has length 23 [2022-01-18 13:50:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:33,467 INFO L470 AbstractCegarLoop]: Abstraction has 90211 states and 438060 transitions. [2022-01-18 13:50:33,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:50:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 90211 states and 438060 transitions. [2022-01-18 13:50:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:50:33,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:33,468 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] [2022-01-18 13:50:33,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 13:50:33,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1483448859, now seen corresponding path program 1 times [2022-01-18 13:50:33,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967551254] [2022-01-18 13:50:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:33,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:50:33,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967551254] [2022-01-18 13:50:33,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967551254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:50:33,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:50:33,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:50:33,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730787863] [2022-01-18 13:50:33,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:50:33,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:50:33,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:50:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:33,498 INFO L87 Difference]: Start difference. First operand 90211 states and 438060 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:34,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:34,591 INFO L93 Difference]: Finished difference Result 89485 states and 434052 transitions. [2022-01-18 13:50:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:50:34,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-01-18 13:50:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:35,007 INFO L225 Difference]: With dead ends: 89485 [2022-01-18 13:50:35,007 INFO L226 Difference]: Without dead ends: 89485 [2022-01-18 13:50:35,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:50:35,008 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 22 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:35,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 97 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89485 states. [2022-01-18 13:50:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89485 to 89485. [2022-01-18 13:50:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89485 states, 89480 states have (on average 4.850827000447027) internal successors, (434052), 89484 states have internal predecessors, (434052), 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 13:50:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89485 states to 89485 states and 434052 transitions. [2022-01-18 13:50:38,599 INFO L78 Accepts]: Start accepts. Automaton has 89485 states and 434052 transitions. Word has length 33 [2022-01-18 13:50:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:38,599 INFO L470 AbstractCegarLoop]: Abstraction has 89485 states and 434052 transitions. [2022-01-18 13:50:38,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 13:50:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 89485 states and 434052 transitions. [2022-01-18 13:50:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 13:50:38,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:38,599 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] [2022-01-18 13:50:38,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 13:50:38,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1737726477, now seen corresponding path program 1 times [2022-01-18 13:50:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353968001] [2022-01-18 13:50:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:38,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:38,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353968001] [2022-01-18 13:50:38,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353968001] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158490005] [2022-01-18 13:50:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:38,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:38,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:38,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 13:50:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:38,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:50:38,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:38,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:38,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158490005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:38,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:50:38,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263166987] [2022-01-18 13:50:38,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:50:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:50:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:50:38,768 INFO L87 Difference]: Start difference. First operand 89485 states and 434052 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:39,983 INFO L93 Difference]: Finished difference Result 89383 states and 433797 transitions. [2022-01-18 13:50:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:50:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 13:50:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:40,432 INFO L225 Difference]: With dead ends: 89383 [2022-01-18 13:50:40,432 INFO L226 Difference]: Without dead ends: 89383 [2022-01-18 13:50:40,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:50:40,433 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 122 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:40,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 376 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:50:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89383 states. [2022-01-18 13:50:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89383 to 89383. [2022-01-18 13:50:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89383 states, 89380 states have (on average 4.8534012083240095) internal successors, (433797), 89382 states have internal predecessors, (433797), 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 13:50:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89383 states to 89383 states and 433797 transitions. [2022-01-18 13:50:44,125 INFO L78 Accepts]: Start accepts. Automaton has 89383 states and 433797 transitions. Word has length 36 [2022-01-18 13:50:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:44,125 INFO L470 AbstractCegarLoop]: Abstraction has 89383 states and 433797 transitions. [2022-01-18 13:50:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 13:50:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 89383 states and 433797 transitions. [2022-01-18 13:50:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 13:50:44,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:44,149 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 13:50:44,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:44,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 13:50:44,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1612090915, now seen corresponding path program 1 times [2022-01-18 13:50:44,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:44,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391467840] [2022-01-18 13:50:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:44,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:44,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:44,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391467840] [2022-01-18 13:50:44,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391467840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:44,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968949831] [2022-01-18 13:50:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:44,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:44,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:44,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:44,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 13:50:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:44,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 13:50:44,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:44,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:50:44,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968949831] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:44,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:44,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 13:50:44,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111480449] [2022-01-18 13:50:44,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:44,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:50:44,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:50:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:50:44,621 INFO L87 Difference]: Start difference. First operand 89383 states and 433797 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 13:50:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:46,516 INFO L93 Difference]: Finished difference Result 130000 states and 618507 transitions. [2022-01-18 13:50:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:50:46,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 56 [2022-01-18 13:50:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:47,252 INFO L225 Difference]: With dead ends: 130000 [2022-01-18 13:50:47,252 INFO L226 Difference]: Without dead ends: 128191 [2022-01-18 13:50:47,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=637, Invalid=2333, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:50:47,253 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 987 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:47,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 1322 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:50:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128191 states. [2022-01-18 13:50:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128191 to 119605. [2022-01-18 13:50:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119605 states, 119602 states have (on average 4.794225849066069) internal successors, (573399), 119604 states have internal predecessors, (573399), 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 13:50:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119605 states to 119605 states and 573399 transitions. [2022-01-18 13:50:51,848 INFO L78 Accepts]: Start accepts. Automaton has 119605 states and 573399 transitions. Word has length 56 [2022-01-18 13:50:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:50:51,848 INFO L470 AbstractCegarLoop]: Abstraction has 119605 states and 573399 transitions. [2022-01-18 13:50:51,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 13:50:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 119605 states and 573399 transitions. [2022-01-18 13:50:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 13:50:51,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:50:51,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 13:50:51,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 13:50:52,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 13:50:52,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:50:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:50:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash 930514222, now seen corresponding path program 1 times [2022-01-18 13:50:52,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:50:52,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216316858] [2022-01-18 13:50:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:52,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:50:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:52,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:50:52,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216316858] [2022-01-18 13:50:52,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216316858] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:50:52,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714409552] [2022-01-18 13:50:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:50:52,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:50:52,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:50:52,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:50:52,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 13:50:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:50:52,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 13:50:52,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:50:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:52,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:50:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:50:52,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714409552] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:50:52,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:50:52,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 13:50:52,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370024687] [2022-01-18 13:50:52,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:50:52,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 13:50:52,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:50:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 13:50:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 13:50:52,427 INFO L87 Difference]: Start difference. First operand 119605 states and 573399 transitions. Second operand has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 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 13:50:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:50:55,328 INFO L93 Difference]: Finished difference Result 150007 states and 713700 transitions. [2022-01-18 13:50:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 13:50:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 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 56 [2022-01-18 13:50:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:50:56,152 INFO L225 Difference]: With dead ends: 150007 [2022-01-18 13:50:56,152 INFO L226 Difference]: Without dead ends: 144904 [2022-01-18 13:50:56,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1273, Invalid=5369, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 13:50:56,153 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1937 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:50:56,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 2083 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:50:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144904 states. [2022-01-18 13:50:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144904 to 122413. [2022-01-18 13:51:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122413 states, 122412 states have (on average 4.807910989118714) internal successors, (588546), 122412 states have internal predecessors, (588546), 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 13:51:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122413 states to 122413 states and 588546 transitions. [2022-01-18 13:51:01,122 INFO L78 Accepts]: Start accepts. Automaton has 122413 states and 588546 transitions. Word has length 56 [2022-01-18 13:51:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:51:01,123 INFO L470 AbstractCegarLoop]: Abstraction has 122413 states and 588546 transitions. [2022-01-18 13:51:01,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 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 13:51:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 122413 states and 588546 transitions. [2022-01-18 13:51:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 13:51:01,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:51:01,219 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 13:51:01,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 13:51:01,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:51:01,423 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:51:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:51:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1215162759, now seen corresponding path program 1 times [2022-01-18 13:51:01,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:51:01,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126784152] [2022-01-18 13:51:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:51:01,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:51:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:51:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:51:01,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:51:01,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126784152] [2022-01-18 13:51:01,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126784152] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:51:01,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66686302] [2022-01-18 13:51:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:51:01,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:51:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:51:01,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:51:01,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 13:51:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:51:01,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 13:51:01,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:51:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:51:01,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:51:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 13:51:01,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66686302] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:51:01,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:51:01,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-01-18 13:51:01,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271040743] [2022-01-18 13:51:01,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:51:01,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 13:51:01,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:51:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 13:51:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-01-18 13:51:01,914 INFO L87 Difference]: Start difference. First operand 122413 states and 588546 transitions. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 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 13:51:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:51:04,089 INFO L93 Difference]: Finished difference Result 117391 states and 550881 transitions. [2022-01-18 13:51:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 13:51:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 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 76 [2022-01-18 13:51:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:51:04,089 INFO L225 Difference]: With dead ends: 117391 [2022-01-18 13:51:04,089 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:51:04,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1371, Invalid=5939, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 13:51:04,091 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2474 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:51:04,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2474 Valid, 2111 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:51:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:51:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:51:04,091 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 13:51:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:51:04,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-01-18 13:51:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:51:04,091 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:51:04,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 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 13:51:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:51:04,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:51:04,092 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-18 13:51:04,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 13:51:04,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:51:04,292 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:51:04,292 INFO L308 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2022-01-18 13:51:04,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-18 13:51:04,293 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 13:51:04,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:51:04,294 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 87 transitions, 234 flow [2022-01-18 13:51:07,334 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101101 states, 101100 states have (on average 4.935459940652819) internal successors, (498975), 101100 states have internal predecessors, (498975), 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 13:51:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 101101 states, 101100 states have (on average 4.935459940652819) internal successors, (498975), 101100 states have internal predecessors, (498975), 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 13:51:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 13:51:07,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:51:07,545 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 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 13:51:07,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:51:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:51:07,545 INFO L85 PathProgramCache]: Analyzing trace with hash -184578877, now seen corresponding path program 1 times [2022-01-18 13:51:07,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:51:07,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349806392] [2022-01-18 13:51:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:51:07,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:51:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:51:07,560 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:51:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:51:07,569 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:51:07,569 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:51:07,569 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-18 13:51:07,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 13:51:07,570 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 13:51:07,570 INFO L308 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-18 13:51:07,570 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 13:51:07,570 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-01-18 13:51:07,576 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,576 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,577 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,578 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,579 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,580 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,581 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,582 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,583 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,584 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,584 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,584 WARN L322 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,584 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:51:07,585 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-01-18 13:51:07,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:51:07,586 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 13:51:07,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-18 13:51:07,586 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 98 places, 94 transitions, 266 flow [2022-01-18 13:51:34,135 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 727846 states, 727838 states have (on average 5.8461388385877076) internal successors, (4255042), 727845 states have internal predecessors, (4255042), 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 13:51:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 727846 states, 727838 states have (on average 5.8461388385877076) internal successors, (4255042), 727845 states have internal predecessors, (4255042), 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 13:51:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:51:35,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:51:35,519 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] [2022-01-18 13:51:35,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:51:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:51:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -543325312, now seen corresponding path program 1 times [2022-01-18 13:51:35,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:51:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384640564] [2022-01-18 13:51:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:51:35,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:51:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:51:35,549 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 13:51:35,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:51:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384640564] [2022-01-18 13:51:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384640564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:51:35,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:51:35,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:51:35,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756142969] [2022-01-18 13:51:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:51:35,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:51:35,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:51:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:51:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:51:36,885 INFO L87 Difference]: Start difference. First operand has 727846 states, 727838 states have (on average 5.8461388385877076) internal successors, (4255042), 727845 states have internal predecessors, (4255042), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:51:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:51:50,484 INFO L93 Difference]: Finished difference Result 727846 states and 4199055 transitions. [2022-01-18 13:51:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:51:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-01-18 13:51:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:51:56,613 INFO L225 Difference]: With dead ends: 727846 [2022-01-18 13:51:56,613 INFO L226 Difference]: Without dead ends: 541222 [2022-01-18 13:51:56,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:51:56,614 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:51:56,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:51:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541222 states. [2022-01-18 13:52:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541222 to 541222. [2022-01-18 13:52:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541222 states, 541215 states have (on average 5.689626119010005) internal successors, (3079311), 541221 states have internal predecessors, (3079311), 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 13:52:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541222 states to 541222 states and 3079311 transitions. [2022-01-18 13:52:31,805 INFO L78 Accepts]: Start accepts. Automaton has 541222 states and 3079311 transitions. Word has length 23 [2022-01-18 13:52:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:52:31,805 INFO L470 AbstractCegarLoop]: Abstraction has 541222 states and 3079311 transitions. [2022-01-18 13:52:31,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 13:52:31,805 INFO L276 IsEmpty]: Start isEmpty. Operand 541222 states and 3079311 transitions. [2022-01-18 13:52:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 13:52:31,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:52:31,805 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] [2022-01-18 13:52:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 13:52:31,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-18 13:52:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:52:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -543324351, now seen corresponding path program 1 times [2022-01-18 13:52:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:52:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136064422] [2022-01-18 13:52:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:52:31,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:52:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:52:31,827 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 13:52:31,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:52:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136064422] [2022-01-18 13:52:31,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136064422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:52:31,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:52:31,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:52:31,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409180814] [2022-01-18 13:52:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:52:31,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:52:31,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:52:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:52:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:52:31,828 INFO L87 Difference]: Start difference. First operand 541222 states and 3079311 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:52:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:52:43,026 INFO L93 Difference]: Finished difference Result 541219 states and 3079308 transitions. [2022-01-18 13:52:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:52:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-01-18 13:52:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:52:53,446 INFO L225 Difference]: With dead ends: 541219 [2022-01-18 13:52:53,446 INFO L226 Difference]: Without dead ends: 541219 [2022-01-18 13:52:53,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:52:53,447 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:52:53,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:52:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541219 states.