/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:39:19,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:39:19,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:39:19,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 11:39:19,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 11:39:19,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 11:39:19,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 11:39:19,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 11:39:19,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 11:39:19,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 11:39:19,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 11:39:19,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 11:39:19,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 11:39:19,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 11:39:19,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 11:39:19,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 11:39:19,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 11:39:19,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 11:39:19,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 11:39:19,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 11:39:19,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 11:39:19,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 11:39:19,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 11:39:19,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 11:39:19,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 11:39:19,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 11:39:19,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 11:39:19,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 11:39:19,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 11:39:19,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 11:39:19,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 11:39:19,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 11:39:19,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 11:39:19,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 11:39:19,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 11:39:19,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 11:39:19,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 11:39:19,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 11:39:19,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 11:39:19,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 11:39:19,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 11:39:19,422 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.epf [2021-08-21 11:39:19,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:39:19,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:39:19,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:39:19,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:39:19,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:39:19,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:39:19,456 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:39:19,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:39:19,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:39:19,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:39:19,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:39:19,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:39:19,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:39:19,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:39:19,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:39:19,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:39:19,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:39:19,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:39:19,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:39:19,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:39:19,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:39:19,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:39:19,742 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:39:19,742 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:39:19,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-08-21 11:39:19,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c917981/2468ca76b5e441fc8d041a410103d198/FLAGec6be9c34 [2021-08-21 11:39:20,190 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:39:20,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-08-21 11:39:20,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c917981/2468ca76b5e441fc8d041a410103d198/FLAGec6be9c34 [2021-08-21 11:39:20,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c917981/2468ca76b5e441fc8d041a410103d198 [2021-08-21 11:39:20,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:39:20,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:39:20,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:39:20,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:39:20,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:39:20,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:20,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2319f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20, skipping insertion in model container [2021-08-21 11:39:20,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:20,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:39:20,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:39:20,711 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i[949,962] [2021-08-21 11:39:20,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:39:20,866 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:39:20,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i[949,962] [2021-08-21 11:39:20,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:39:20,935 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:39:20,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20 WrapperNode [2021-08-21 11:39:20,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:39:20,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:39:20,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:39:20,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:39:20,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:20,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:20,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:39:20,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:39:20,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:39:20,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:39:20,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:20,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:39:21,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:39:21,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:39:21,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:39:21,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (1/1) ... [2021-08-21 11:39:21,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:39:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:39:21,035 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) [2021-08-21 11:39:21,068 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 [2021-08-21 11:39:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:39:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:39:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:39:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:39:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 11:39:21,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 11:39:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 11:39:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 11:39:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 11:39:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 11:39:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:39:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:39:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:39:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:39:21,084 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:39:21,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:39:21,426 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 11:39:21,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:39:21 BoogieIcfgContainer [2021-08-21 11:39:21,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:39:21,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:39:21,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:39:21,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:39:21,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:39:20" (1/3) ... [2021-08-21 11:39:21,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d2fd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:39:21, skipping insertion in model container [2021-08-21 11:39:21,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:39:20" (2/3) ... [2021-08-21 11:39:21,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d2fd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:39:21, skipping insertion in model container [2021-08-21 11:39:21,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:39:21" (3/3) ... [2021-08-21 11:39:21,434 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2021-08-21 11:39:21,438 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:39:21,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:39:21,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 11:39:21,439 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:39:21,463 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,464 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,465 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,467 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,475 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:39:21,480 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 11:39:21,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:39:21,512 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 [2021-08-21 11:39:21,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 11:39:21,519 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-08-21 11:39:21,671 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-08-21 11:39:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-08-21 11:39:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 11:39:21,714 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:21,714 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] [2021-08-21 11:39:21,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:21,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1496974853, now seen corresponding path program 1 times [2021-08-21 11:39:21,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:21,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979312476] [2021-08-21 11:39:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:21,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:22,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:22,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979312476] [2021-08-21 11:39:22,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979312476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:22,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:22,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:22,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435627681] [2021-08-21 11:39:22,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:22,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:22,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:22,157 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-08-21 11:39:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:22,539 INFO L93 Difference]: Finished difference Result 9343 states and 31536 transitions. [2021-08-21 11:39:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:39:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2021-08-21 11:39:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:22,589 INFO L225 Difference]: With dead ends: 9343 [2021-08-21 11:39:22,589 INFO L226 Difference]: Without dead ends: 6085 [2021-08-21 11:39:22,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:39:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2021-08-21 11:39:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 5155. [2021-08-21 11:39:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 3.3141249514939854) internal successors, (17081), 5154 states have internal predecessors, (17081), 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) [2021-08-21 11:39:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 17081 transitions. [2021-08-21 11:39:22,853 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 17081 transitions. Word has length 48 [2021-08-21 11:39:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:22,854 INFO L470 AbstractCegarLoop]: Abstraction has 5155 states and 17081 transitions. [2021-08-21 11:39:22,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-08-21 11:39:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 17081 transitions. [2021-08-21 11:39:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 11:39:22,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:22,874 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] [2021-08-21 11:39:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:39:22,875 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1202635458, now seen corresponding path program 1 times [2021-08-21 11:39:22,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:22,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640216119] [2021-08-21 11:39:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:22,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:23,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:23,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640216119] [2021-08-21 11:39:23,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640216119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:23,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:23,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:23,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788778482] [2021-08-21 11:39:23,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:23,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:23,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:23,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:23,105 INFO L87 Difference]: Start difference. First operand 5155 states and 17081 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) [2021-08-21 11:39:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:23,329 INFO L93 Difference]: Finished difference Result 7425 states and 24313 transitions. [2021-08-21 11:39:23,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:39:23,330 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 [2021-08-21 11:39:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:23,359 INFO L225 Difference]: With dead ends: 7425 [2021-08-21 11:39:23,359 INFO L226 Difference]: Without dead ends: 5933 [2021-08-21 11:39:23,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:39:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2021-08-21 11:39:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 4737. [2021-08-21 11:39:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4736 states have (on average 3.2856841216216215) internal successors, (15561), 4736 states have internal predecessors, (15561), 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) [2021-08-21 11:39:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 15561 transitions. [2021-08-21 11:39:23,515 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 15561 transitions. Word has length 50 [2021-08-21 11:39:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:23,515 INFO L470 AbstractCegarLoop]: Abstraction has 4737 states and 15561 transitions. [2021-08-21 11:39:23,515 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) [2021-08-21 11:39:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 15561 transitions. [2021-08-21 11:39:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 11:39:23,525 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:23,525 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] [2021-08-21 11:39:23,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:39:23,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash 147375699, now seen corresponding path program 1 times [2021-08-21 11:39:23,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:23,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137280549] [2021-08-21 11:39:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:23,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:23,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:23,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137280549] [2021-08-21 11:39:23,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137280549] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:23,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:23,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:23,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63399595] [2021-08-21 11:39:23,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:23,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:23,621 INFO L87 Difference]: Start difference. First operand 4737 states and 15561 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) [2021-08-21 11:39:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:23,791 INFO L93 Difference]: Finished difference Result 6489 states and 21079 transitions. [2021-08-21 11:39:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:39:23,792 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 [2021-08-21 11:39:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:23,820 INFO L225 Difference]: With dead ends: 6489 [2021-08-21 11:39:23,820 INFO L226 Difference]: Without dead ends: 3041 [2021-08-21 11:39:23,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:39:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-08-21 11:39:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2949. [2021-08-21 11:39:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 3.1706241519674356) internal successors, (9347), 2948 states have internal predecessors, (9347), 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) [2021-08-21 11:39:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 9347 transitions. [2021-08-21 11:39:23,894 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 9347 transitions. Word has length 53 [2021-08-21 11:39:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:23,896 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 9347 transitions. [2021-08-21 11:39:23,896 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) [2021-08-21 11:39:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 9347 transitions. [2021-08-21 11:39:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-21 11:39:23,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:23,902 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] [2021-08-21 11:39:23,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:39:23,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1823128934, now seen corresponding path program 1 times [2021-08-21 11:39:23,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:23,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649978364] [2021-08-21 11:39:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:23,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:24,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:24,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649978364] [2021-08-21 11:39:24,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649978364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:24,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:24,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:24,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806269470] [2021-08-21 11:39:24,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:24,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:24,038 INFO L87 Difference]: Start difference. First operand 2949 states and 9347 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-08-21 11:39:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:24,247 INFO L93 Difference]: Finished difference Result 3961 states and 12410 transitions. [2021-08-21 11:39:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:39:24,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 [2021-08-21 11:39:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:24,257 INFO L225 Difference]: With dead ends: 3961 [2021-08-21 11:39:24,257 INFO L226 Difference]: Without dead ends: 3305 [2021-08-21 11:39:24,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:39:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2021-08-21 11:39:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 2797. [2021-08-21 11:39:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 3.1548640915593706) internal successors, (8821), 2796 states have internal predecessors, (8821), 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) [2021-08-21 11:39:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 8821 transitions. [2021-08-21 11:39:24,317 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 8821 transitions. Word has length 55 [2021-08-21 11:39:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:24,319 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 8821 transitions. [2021-08-21 11:39:24,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-08-21 11:39:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 8821 transitions. [2021-08-21 11:39:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 11:39:24,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:24,325 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] [2021-08-21 11:39:24,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:39:24,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:24,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1341770602, now seen corresponding path program 1 times [2021-08-21 11:39:24,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:24,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452428934] [2021-08-21 11:39:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:24,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:24,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:24,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452428934] [2021-08-21 11:39:24,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452428934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:24,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:24,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:39:24,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609233974] [2021-08-21 11:39:24,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:39:24,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:39:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:39:24,440 INFO L87 Difference]: Start difference. First operand 2797 states and 8821 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-08-21 11:39:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:24,525 INFO L93 Difference]: Finished difference Result 4793 states and 15082 transitions. [2021-08-21 11:39:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 11:39:24,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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 [2021-08-21 11:39:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:24,533 INFO L225 Difference]: With dead ends: 4793 [2021-08-21 11:39:24,534 INFO L226 Difference]: Without dead ends: 2833 [2021-08-21 11:39:24,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-21 11:39:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-08-21 11:39:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2417. [2021-08-21 11:39:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2416 states have (on average 3.156456953642384) internal successors, (7626), 2416 states have internal predecessors, (7626), 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) [2021-08-21 11:39:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 7626 transitions. [2021-08-21 11:39:24,586 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 7626 transitions. Word has length 56 [2021-08-21 11:39:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:24,587 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 7626 transitions. [2021-08-21 11:39:24,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-08-21 11:39:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 7626 transitions. [2021-08-21 11:39:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 11:39:24,592 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:24,592 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] [2021-08-21 11:39:24,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:39:24,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:24,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1877129668, now seen corresponding path program 2 times [2021-08-21 11:39:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:24,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337167016] [2021-08-21 11:39:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:24,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:24,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:24,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337167016] [2021-08-21 11:39:24,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337167016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:24,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:24,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:24,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147901888] [2021-08-21 11:39:24,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:24,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:24,671 INFO L87 Difference]: Start difference. First operand 2417 states and 7626 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) [2021-08-21 11:39:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:24,741 INFO L93 Difference]: Finished difference Result 2865 states and 8922 transitions. [2021-08-21 11:39:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 11:39:24,742 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 [2021-08-21 11:39:24,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:24,745 INFO L225 Difference]: With dead ends: 2865 [2021-08-21 11:39:24,745 INFO L226 Difference]: Without dead ends: 1285 [2021-08-21 11:39:24,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:39:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-08-21 11:39:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2021-08-21 11:39:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 2.9883177570093458) internal successors, (3837), 1284 states have internal predecessors, (3837), 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) [2021-08-21 11:39:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 3837 transitions. [2021-08-21 11:39:24,766 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 3837 transitions. Word has length 56 [2021-08-21 11:39:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:24,766 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 3837 transitions. [2021-08-21 11:39:24,766 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) [2021-08-21 11:39:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 3837 transitions. [2021-08-21 11:39:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 11:39:24,768 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:24,768 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] [2021-08-21 11:39:24,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:39:24,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1957054318, now seen corresponding path program 3 times [2021-08-21 11:39:24,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:24,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898446700] [2021-08-21 11:39:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:24,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:24,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:24,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898446700] [2021-08-21 11:39:24,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898446700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:24,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:24,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:39:24,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342120721] [2021-08-21 11:39:24,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:39:24,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:39:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:39:24,878 INFO L87 Difference]: Start difference. First operand 1285 states and 3837 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-08-21 11:39:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:24,942 INFO L93 Difference]: Finished difference Result 1486 states and 4388 transitions. [2021-08-21 11:39:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:39:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 [2021-08-21 11:39:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:24,945 INFO L225 Difference]: With dead ends: 1486 [2021-08-21 11:39:24,945 INFO L226 Difference]: Without dead ends: 1150 [2021-08-21 11:39:24,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:39:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-08-21 11:39:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2021-08-21 11:39:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 2.947780678851175) internal successors, (3387), 1149 states have internal predecessors, (3387), 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) [2021-08-21 11:39:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3387 transitions. [2021-08-21 11:39:24,964 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3387 transitions. Word has length 56 [2021-08-21 11:39:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:24,965 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 3387 transitions. [2021-08-21 11:39:24,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-08-21 11:39:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3387 transitions. [2021-08-21 11:39:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:39:24,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:24,967 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] [2021-08-21 11:39:24,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:39:24,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash 574665913, now seen corresponding path program 1 times [2021-08-21 11:39:24,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:24,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720000679] [2021-08-21 11:39:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:24,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:25,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:25,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720000679] [2021-08-21 11:39:25,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720000679] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:25,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:25,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:39:25,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211770294] [2021-08-21 11:39:25,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:39:25,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:25,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:39:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:39:25,056 INFO L87 Difference]: Start difference. First operand 1150 states and 3387 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:39:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:25,137 INFO L93 Difference]: Finished difference Result 1042 states and 2967 transitions. [2021-08-21 11:39:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:39:25,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:39:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:25,139 INFO L225 Difference]: With dead ends: 1042 [2021-08-21 11:39:25,139 INFO L226 Difference]: Without dead ends: 790 [2021-08-21 11:39:25,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:39:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-08-21 11:39:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2021-08-21 11:39:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.790874524714829) internal successors, (2202), 789 states have internal predecessors, (2202), 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) [2021-08-21 11:39:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2202 transitions. [2021-08-21 11:39:25,152 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2202 transitions. Word has length 57 [2021-08-21 11:39:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:25,152 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2202 transitions. [2021-08-21 11:39:25,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:39:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2202 transitions. [2021-08-21 11:39:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 11:39:25,154 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:39:25,154 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] [2021-08-21 11:39:25,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:39:25,154 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:39:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:39:25,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1784706366, now seen corresponding path program 1 times [2021-08-21 11:39:25,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:39:25,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815809199] [2021-08-21 11:39:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:39:25,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:39:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:39:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:39:25,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:39:25,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815809199] [2021-08-21 11:39:25,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815809199] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:39:25,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:39:25,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:39:25,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709603919] [2021-08-21 11:39:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:39:25,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:39:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:39:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:39:25,232 INFO L87 Difference]: Start difference. First operand 790 states and 2202 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) [2021-08-21 11:39:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:39:25,296 INFO L93 Difference]: Finished difference Result 493 states and 1311 transitions. [2021-08-21 11:39:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 11:39:25,296 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 [2021-08-21 11:39:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:39:25,296 INFO L225 Difference]: With dead ends: 493 [2021-08-21 11:39:25,296 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 11:39:25,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:39:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 11:39:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 11:39:25,297 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) [2021-08-21 11:39:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 11:39:25,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-08-21 11:39:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:39:25,297 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 11:39:25,298 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) [2021-08-21 11:39:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 11:39:25,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 11:39:25,300 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:39:25,300 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:39:25,300 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:39:25,300 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 11:39:25,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 11:39:25,303 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:39:25,303 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:39:25,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:39:25 BasicIcfg [2021-08-21 11:39:25,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:39:25,306 INFO L168 Benchmark]: Toolchain (without parser) took 4755.13 ms. Allocated memory was 210.8 MB in the beginning and 451.9 MB in the end (delta: 241.2 MB). Free memory was 173.7 MB in the beginning and 176.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 239.6 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,306 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 210.8 MB. Free memory is still 191.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:39:25,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.32 ms. Allocated memory is still 210.8 MB. Free memory was 173.5 MB in the beginning and 184.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 210.8 MB. Free memory was 184.3 MB in the beginning and 182.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,306 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 210.8 MB. Free memory was 182.7 MB in the beginning and 181.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,307 INFO L168 Benchmark]: RCFGBuilder took 412.53 ms. Allocated memory is still 210.8 MB. Free memory was 181.1 MB in the beginning and 157.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,307 INFO L168 Benchmark]: TraceAbstraction took 3874.62 ms. Allocated memory was 210.8 MB in the beginning and 451.9 MB in the end (delta: 241.2 MB). Free memory was 157.0 MB in the beginning and 176.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 223.8 MB. Max. memory is 8.0 GB. [2021-08-21 11:39:25,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 210.8 MB. Free memory is still 191.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 385.32 ms. Allocated memory is still 210.8 MB. Free memory was 173.5 MB in the beginning and 184.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 210.8 MB. Free memory was 184.3 MB in the beginning and 182.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 210.8 MB. Free memory was 182.7 MB in the beginning and 181.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.53 ms. Allocated memory is still 210.8 MB. Free memory was 181.1 MB in the beginning and 157.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3874.62 ms. Allocated memory was 210.8 MB in the beginning and 451.9 MB in the end (delta: 241.2 MB). Free memory was 157.0 MB in the beginning and 176.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 223.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3795.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 87.6ms, AutomataDifference: 1533.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 159.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 934 SDtfs, 1316 SDslu, 3269 SDs, 0 SdLazy, 373 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 261.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 850.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 645.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 3142 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 173.4ms SatisfiabilityAnalysisTime, 983.4ms InterpolantComputationTime, 489 NumberOfCodeBlocks, 489 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 2208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-08-21 11:39:25,339 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...