/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:04:01,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:04:01,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:04:01,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-06 19:04:01,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-06 19:04:01,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-06 19:04:01,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-06 19:04:01,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-06 19:04:01,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-06 19:04:01,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-06 19:04:01,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-06 19:04:01,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-06 19:04:01,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:04:01,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:04:01,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:04:01,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:04:01,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:04:01,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:04:01,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:04:01,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:04:01,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:04:01,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:04:01,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:04:01,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:04:01,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-06 19:04:01,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-06 19:04:01,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-06 19:04:01,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-06 19:04:01,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-06 19:04:01,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-06 19:04:01,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-06 19:04:01,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-06 19:04:01,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-06 19:04:01,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-06 19:04:01,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-06 19:04:01,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-06 19:04:01,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-06 19:04:01,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-06 19:04:01,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:04:01,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:04:01,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:04:01,564 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-Delay.epf [2021-08-06 19:04:01,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:04:01,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:04:01,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:04:01,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:04:01,608 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:04:01,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:04:01,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:04:01,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:04:01,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:04:01,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:04:01,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:04:01,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:04:01,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:04:01,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:04:01,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:04:01,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:04:01,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:04:01,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:04:01,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:04:01,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:04:01,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:04:01,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:01,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:04:01,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:04:01,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:04:01,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:04:01,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:04:01,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:04:01,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:04:01,613 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:04:01,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:04:01,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:04:01,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:04:01,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:04:01,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:04:01,983 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:04:01,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-08-06 19:04:02,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090cf18/0347c3e23bfe440d911c8a22e5db5d19/FLAG37c315f34 [2021-08-06 19:04:02,600 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:04:02,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-08-06 19:04:02,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090cf18/0347c3e23bfe440d911c8a22e5db5d19/FLAG37c315f34 [2021-08-06 19:04:03,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090cf18/0347c3e23bfe440d911c8a22e5db5d19 [2021-08-06 19:04:03,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:04:03,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:04:03,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:03,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:04:03,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:04:03,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62801c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03, skipping insertion in model container [2021-08-06 19:04:03,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:04:03,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:04:03,236 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i[950,963] [2021-08-06 19:04:03,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:03,387 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:04:03,397 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i[950,963] [2021-08-06 19:04:03,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:04:03,452 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:04:03,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03 WrapperNode [2021-08-06 19:04:03,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:04:03,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:03,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:04:03,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:04:03,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:04:03,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:04:03,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:04:03,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:04:03,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:04:03,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:04:03,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:04:03,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:04:03,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (1/1) ... [2021-08-06 19:04:03,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:04:03,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:04:03,538 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) [2021-08-06 19:04:03,569 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 [2021-08-06 19:04:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:04:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 19:04:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-06 19:04:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-06 19:04:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-06 19:04:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:04:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 19:04:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:04:03,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:04:03,604 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:04:03,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:04:03,985 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:04:03,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:03 BoogieIcfgContainer [2021-08-06 19:04:03,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:04:03,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:04:03,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:04:03,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:04:03,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:04:03" (1/3) ... [2021-08-06 19:04:03,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e17103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:03, skipping insertion in model container [2021-08-06 19:04:03,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:04:03" (2/3) ... [2021-08-06 19:04:03,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e17103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:04:03, skipping insertion in model container [2021-08-06 19:04:03,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:04:03" (3/3) ... [2021-08-06 19:04:03,995 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2021-08-06 19:04:03,999 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:04:04,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:04:04,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:04:04,000 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:04:04,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:04:04,096 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 19:04:04,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:04:04,153 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, mConcurrency=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 [2021-08-06 19:04:04,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 19:04:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 4767 states have (on average 2.051185231801972) internal successors, (9778), 5557 states have internal predecessors, (9778), 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) [2021-08-06 19:04:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 19:04:04,864 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:04,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:04,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:04,870 INFO L82 PathProgramCache]: Analyzing trace with hash 134217625, now seen corresponding path program 1 times [2021-08-06 19:04:04,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:04,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358002121] [2021-08-06 19:04:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:04,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:05,234 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:05,262 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:05,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:05,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358002121] [2021-08-06 19:04:05,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358002121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:05,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:05,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:05,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506153667] [2021-08-06 19:04:05,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:05,499 INFO L87 Difference]: Start difference. First operand has 5558 states, 4767 states have (on average 2.051185231801972) internal successors, (9778), 5557 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-08-06 19:04:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:05,859 INFO L93 Difference]: Finished difference Result 10171 states and 18679 transitions. [2021-08-06 19:04:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2021-08-06 19:04:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:05,895 INFO L225 Difference]: With dead ends: 10171 [2021-08-06 19:04:05,895 INFO L226 Difference]: Without dead ends: 3519 [2021-08-06 19:04:05,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 198.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2021-08-06 19:04:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 2618. [2021-08-06 19:04:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2569 states have (on average 2.257298559750876) internal successors, (5799), 2617 states have internal predecessors, (5799), 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) [2021-08-06 19:04:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 5799 transitions. [2021-08-06 19:04:06,082 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 5799 transitions. Word has length 48 [2021-08-06 19:04:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:06,082 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 5799 transitions. [2021-08-06 19:04:06,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-08-06 19:04:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 5799 transitions. [2021-08-06 19:04:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 19:04:06,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:06,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:06,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:04:06,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -149563686, now seen corresponding path program 1 times [2021-08-06 19:04:06,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:06,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332272432] [2021-08-06 19:04:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:06,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:06,258 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:06,265 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:06,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:06,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332272432] [2021-08-06 19:04:06,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332272432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:06,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:06,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:06,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041737139] [2021-08-06 19:04:06,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:06,360 INFO L87 Difference]: Start difference. First operand 2618 states and 5799 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-08-06 19:04:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:06,640 INFO L93 Difference]: Finished difference Result 4277 states and 9964 transitions. [2021-08-06 19:04:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:06,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2021-08-06 19:04:06,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:06,657 INFO L225 Difference]: With dead ends: 4277 [2021-08-06 19:04:06,657 INFO L226 Difference]: Without dead ends: 2917 [2021-08-06 19:04:06,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-08-06 19:04:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2104. [2021-08-06 19:04:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2069 states have (on average 2.2455292411793137) internal successors, (4646), 2103 states have internal predecessors, (4646), 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) [2021-08-06 19:04:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 4646 transitions. [2021-08-06 19:04:06,725 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 4646 transitions. Word has length 50 [2021-08-06 19:04:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:06,726 INFO L470 AbstractCegarLoop]: Abstraction has 2104 states and 4646 transitions. [2021-08-06 19:04:06,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-08-06 19:04:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 4646 transitions. [2021-08-06 19:04:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-06 19:04:06,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:06,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:06,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:04:06,731 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1157363988, now seen corresponding path program 1 times [2021-08-06 19:04:06,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:06,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491474421] [2021-08-06 19:04:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:06,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:06,841 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:06,845 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:06,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:06,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491474421] [2021-08-06 19:04:06,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491474421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:06,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:06,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:06,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917302184] [2021-08-06 19:04:06,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:06,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:06,976 INFO L87 Difference]: Start difference. First operand 2104 states and 4646 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-08-06 19:04:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:07,192 INFO L93 Difference]: Finished difference Result 2981 states and 7221 transitions. [2021-08-06 19:04:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:07,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-08-06 19:04:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:07,205 INFO L225 Difference]: With dead ends: 2981 [2021-08-06 19:04:07,205 INFO L226 Difference]: Without dead ends: 2325 [2021-08-06 19:04:07,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 212.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-08-06 19:04:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1720. [2021-08-06 19:04:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1685 states have (on average 2.318100890207715) internal successors, (3906), 1719 states have internal predecessors, (3906), 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) [2021-08-06 19:04:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3906 transitions. [2021-08-06 19:04:07,259 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3906 transitions. Word has length 51 [2021-08-06 19:04:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:07,261 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 3906 transitions. [2021-08-06 19:04:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-08-06 19:04:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3906 transitions. [2021-08-06 19:04:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-06 19:04:07,265 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:07,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:07,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:04:07,266 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1153409307, now seen corresponding path program 1 times [2021-08-06 19:04:07,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:07,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265364439] [2021-08-06 19:04:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:07,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:07,336 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:07,338 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:07,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:07,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265364439] [2021-08-06 19:04:07,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265364439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:07,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:07,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:07,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325101669] [2021-08-06 19:04:07,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:07,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:07,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:07,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:07,430 INFO L87 Difference]: Start difference. First operand 1720 states and 3906 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-08-06 19:04:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:07,658 INFO L93 Difference]: Finished difference Result 2782 states and 6794 transitions. [2021-08-06 19:04:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-08-06 19:04:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:07,683 INFO L225 Difference]: With dead ends: 2782 [2021-08-06 19:04:07,683 INFO L226 Difference]: Without dead ends: 2068 [2021-08-06 19:04:07,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2021-08-06 19:04:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1551. [2021-08-06 19:04:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1523 states have (on average 2.2383453709783323) internal successors, (3409), 1550 states have internal predecessors, (3409), 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) [2021-08-06 19:04:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 3409 transitions. [2021-08-06 19:04:07,728 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 3409 transitions. Word has length 52 [2021-08-06 19:04:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:07,728 INFO L470 AbstractCegarLoop]: Abstraction has 1551 states and 3409 transitions. [2021-08-06 19:04:07,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-08-06 19:04:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 3409 transitions. [2021-08-06 19:04:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 19:04:07,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:07,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:04:07,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:07,733 INFO L82 PathProgramCache]: Analyzing trace with hash -453419627, now seen corresponding path program 1 times [2021-08-06 19:04:07,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:07,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577515083] [2021-08-06 19:04:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:07,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:07,778 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:07,781 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 85.0 percent of original size [2021-08-06 19:04:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:07,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:07,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577515083] [2021-08-06 19:04:07,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577515083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:07,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981785520] [2021-08-06 19:04:07,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:07,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:07,852 INFO L87 Difference]: Start difference. First operand 1551 states and 3409 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-08-06 19:04:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:08,041 INFO L93 Difference]: Finished difference Result 2289 states and 5416 transitions. [2021-08-06 19:04:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:04:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-08-06 19:04:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:08,050 INFO L225 Difference]: With dead ends: 2289 [2021-08-06 19:04:08,050 INFO L226 Difference]: Without dead ends: 1843 [2021-08-06 19:04:08,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-08-06 19:04:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1313. [2021-08-06 19:04:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1293 states have (on average 2.22815158546017) internal successors, (2881), 1312 states have internal predecessors, (2881), 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) [2021-08-06 19:04:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2881 transitions. [2021-08-06 19:04:08,082 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2881 transitions. Word has length 53 [2021-08-06 19:04:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:08,083 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 2881 transitions. [2021-08-06 19:04:08,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-08-06 19:04:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2881 transitions. [2021-08-06 19:04:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 19:04:08,090 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:08,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:08,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:04:08,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:08,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:08,091 INFO L82 PathProgramCache]: Analyzing trace with hash -513484684, now seen corresponding path program 1 times [2021-08-06 19:04:08,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:08,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371937687] [2021-08-06 19:04:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:08,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:08,207 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,209 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:08,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:08,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371937687] [2021-08-06 19:04:08,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371937687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:08,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:08,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:04:08,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858615721] [2021-08-06 19:04:08,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:04:08,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:04:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:04:08,224 INFO L87 Difference]: Start difference. First operand 1313 states and 2881 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:08,334 INFO L93 Difference]: Finished difference Result 1653 states and 3508 transitions. [2021-08-06 19:04:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:04:08,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-06 19:04:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:08,340 INFO L225 Difference]: With dead ends: 1653 [2021-08-06 19:04:08,340 INFO L226 Difference]: Without dead ends: 1089 [2021-08-06 19:04:08,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-08-06 19:04:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2021-08-06 19:04:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1069 states have (on average 2.2731524789522917) internal successors, (2430), 1088 states have internal predecessors, (2430), 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) [2021-08-06 19:04:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2430 transitions. [2021-08-06 19:04:08,368 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2430 transitions. Word has length 55 [2021-08-06 19:04:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:08,369 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2430 transitions. [2021-08-06 19:04:08,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2430 transitions. [2021-08-06 19:04:08,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-06 19:04:08,372 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:08,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:08,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:04:08,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:08,373 INFO L82 PathProgramCache]: Analyzing trace with hash -943502763, now seen corresponding path program 1 times [2021-08-06 19:04:08,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:08,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889692614] [2021-08-06 19:04:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:08,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:08,483 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,485 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:08,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:08,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889692614] [2021-08-06 19:04:08,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889692614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:08,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:08,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:08,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169012735] [2021-08-06 19:04:08,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:08,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:08,502 INFO L87 Difference]: Start difference. First operand 1089 states and 2430 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-08-06 19:04:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:08,632 INFO L93 Difference]: Finished difference Result 1032 states and 2159 transitions. [2021-08-06 19:04:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:04:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 [2021-08-06 19:04:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:08,643 INFO L225 Difference]: With dead ends: 1032 [2021-08-06 19:04:08,643 INFO L226 Difference]: Without dead ends: 616 [2021-08-06 19:04:08,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:04:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-08-06 19:04:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-08-06 19:04:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 598 states have (on average 2.229096989966555) internal successors, (1333), 615 states have internal predecessors, (1333), 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) [2021-08-06 19:04:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1333 transitions. [2021-08-06 19:04:08,656 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1333 transitions. Word has length 56 [2021-08-06 19:04:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:08,657 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1333 transitions. [2021-08-06 19:04:08,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-08-06 19:04:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1333 transitions. [2021-08-06 19:04:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-06 19:04:08,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:08,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:04:08,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1302627168, now seen corresponding path program 1 times [2021-08-06 19:04:08,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:08,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205268153] [2021-08-06 19:04:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:08,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:08,773 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,774 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:04:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:08,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:08,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205268153] [2021-08-06 19:04:08,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205268153] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:08,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:08,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:04:08,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185068768] [2021-08-06 19:04:08,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:04:08,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:04:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:04:08,794 INFO L87 Difference]: Start difference. First operand 616 states and 1333 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-08-06 19:04:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:08,919 INFO L93 Difference]: Finished difference Result 427 states and 799 transitions. [2021-08-06 19:04:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:04:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-06 19:04:08,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:08,921 INFO L225 Difference]: With dead ends: 427 [2021-08-06 19:04:08,921 INFO L226 Difference]: Without dead ends: 234 [2021-08-06 19:04:08,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:04:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-08-06 19:04:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-08-06 19:04:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 225 states have (on average 1.8) internal successors, (405), 233 states have internal predecessors, (405), 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) [2021-08-06 19:04:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 405 transitions. [2021-08-06 19:04:08,925 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 405 transitions. Word has length 58 [2021-08-06 19:04:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:08,926 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 405 transitions. [2021-08-06 19:04:08,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-08-06 19:04:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 405 transitions. [2021-08-06 19:04:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 19:04:08,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:08,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:08,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:04:08,927 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1950521663, now seen corresponding path program 1 times [2021-08-06 19:04:08,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:08,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829701020] [2021-08-06 19:04:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:08,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:09,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:09,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829701020] [2021-08-06 19:04:09,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829701020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:09,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:09,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:09,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586570682] [2021-08-06 19:04:09,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:09,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:09,015 INFO L87 Difference]: Start difference. First operand 234 states and 405 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:09,089 INFO L93 Difference]: Finished difference Result 352 states and 646 transitions. [2021-08-06 19:04:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:04:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-06 19:04:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:09,091 INFO L225 Difference]: With dead ends: 352 [2021-08-06 19:04:09,091 INFO L226 Difference]: Without dead ends: 222 [2021-08-06 19:04:09,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-08-06 19:04:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-08-06 19:04:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 213 states have (on average 1.7981220657276995) internal successors, (383), 221 states have internal predecessors, (383), 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) [2021-08-06 19:04:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 383 transitions. [2021-08-06 19:04:09,095 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 383 transitions. Word has length 60 [2021-08-06 19:04:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:09,095 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 383 transitions. [2021-08-06 19:04:09,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 383 transitions. [2021-08-06 19:04:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 19:04:09,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:04:09,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:04:09,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:04:09,096 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 19:04:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:04:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -924651363, now seen corresponding path program 2 times [2021-08-06 19:04:09,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:04:09,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822312784] [2021-08-06 19:04:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:04:09,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:04:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:04:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:04:09,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:04:09,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822312784] [2021-08-06 19:04:09,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822312784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:04:09,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:04:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:04:09,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374455558] [2021-08-06 19:04:09,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:04:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:04:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:04:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:04:09,183 INFO L87 Difference]: Start difference. First operand 222 states and 383 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:04:09,241 INFO L93 Difference]: Finished difference Result 186 states and 323 transitions. [2021-08-06 19:04:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:04:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-06 19:04:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:04:09,242 INFO L225 Difference]: With dead ends: 186 [2021-08-06 19:04:09,242 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:04:09,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:04:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:04:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:04:09,243 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) [2021-08-06 19:04:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:04:09,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-08-06 19:04:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:04:09,243 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:04:09,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:04:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:04:09,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:04:09,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:04:09,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:04:09,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:04:09,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:04:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 19:04:09,250 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:04:09,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:04:09,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:04:09 BasicIcfg [2021-08-06 19:04:09,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:04:09,252 INFO L168 Benchmark]: Toolchain (without parser) took 6199.70 ms. Allocated memory was 173.0 MB in the beginning and 270.5 MB in the end (delta: 97.5 MB). Free memory was 136.8 MB in the beginning and 197.8 MB in the end (delta: -61.1 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory was 154.9 MB in the beginning and 154.8 MB in the end (delta: 132.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.31 ms. Allocated memory is still 173.0 MB. Free memory was 136.6 MB in the beginning and 146.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.80 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 144.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 173.0 MB. Free memory was 144.4 MB in the beginning and 142.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: RCFGBuilder took 478.16 ms. Allocated memory is still 173.0 MB. Free memory was 142.9 MB in the beginning and 118.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,253 INFO L168 Benchmark]: TraceAbstraction took 5262.66 ms. Allocated memory was 173.0 MB in the beginning and 270.5 MB in the end (delta: 97.5 MB). Free memory was 118.2 MB in the beginning and 197.8 MB in the end (delta: -79.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:04:09,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory was 154.9 MB in the beginning and 154.8 MB in the end (delta: 132.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 397.31 ms. Allocated memory is still 173.0 MB. Free memory was 136.6 MB in the beginning and 146.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.80 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 144.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 173.0 MB. Free memory was 144.4 MB in the beginning and 142.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.16 ms. Allocated memory is still 173.0 MB. Free memory was 142.9 MB in the beginning and 118.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5262.66 ms. Allocated memory was 173.0 MB in the beginning and 270.5 MB in the end (delta: 97.5 MB). Free memory was 118.2 MB in the beginning and 197.8 MB in the end (delta: -79.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18580, positive: 17771, positive conditional: 17771, positive unconditional: 0, negative: 809, negative conditional: 809, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18501, positive: 17771, positive conditional: 0, positive unconditional: 17771, negative: 730, negative conditional: 0, negative unconditional: 730, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 636, positive conditional: 0, positive unconditional: 636, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 658, positive: 632, positive conditional: 0, positive unconditional: 632, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18501, positive: 17135, positive conditional: 0, positive unconditional: 17135, negative: 708, negative conditional: 0, negative unconditional: 708, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 636, Positive conditional cache size: 0, Positive unconditional cache size: 636, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Independence queries for same thread: 79 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5106.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 73.9ms, AutomataDifference: 1930.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 665.6ms, PartialOrderReductionTime: 633.7ms, HoareTripleCheckerStatistics: 959 SDtfs, 1268 SDslu, 3118 SDs, 0 SdLazy, 504 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 422.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1332.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 419.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3366 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.9ms SsaConstructionTime, 230.7ms SatisfiabilityAnalysisTime, 1535.8ms InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 533 ConstructedInterpolants, 0 QuantifiedInterpolants, 1903 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 19:04:09,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...