/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:10:58,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:10:58,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:10:58,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-06 19:10:58,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-06 19:10:58,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-06 19:10:58,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-06 19:10:58,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-06 19:10:58,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-06 19:10:58,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-06 19:10:58,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-06 19:10:58,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-06 19:10:58,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:10:58,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:10:58,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:10:58,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:10:58,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:10:58,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:10:58,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:10:58,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:10:58,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:10:58,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:10:58,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:10:58,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:10:58,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:10:58,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-06 19:10:58,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-06 19:10:58,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-06 19:10:58,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-06 19:10:58,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-06 19:10:58,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-06 19:10:58,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-06 19:10:58,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-06 19:10:58,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:10:58,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:10:58,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:10:58,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-08-06 19:10:58,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:10:58,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:10:58,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:10:58,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:10:58,170 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:10:58,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:10:58,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:10:58,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:10:58,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:10:58,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:10:58,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:10:58,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:10:58,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:10:58,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:10:58,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:10:58,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:10:58,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:10:58,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:10:58,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:10:58,174 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:10:58,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:10:58,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:10:58,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:10:58,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:10:58,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 19:10:58,463 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 19:10:58,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-08-06 19:10:58,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0295cdbd/90bbd118c596419da14f8ce61f69f830/FLAG83b5b88d9 [2021-08-06 19:10:58,917 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 19:10:58,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-08-06 19:10:58,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0295cdbd/90bbd118c596419da14f8ce61f69f830/FLAG83b5b88d9 [2021-08-06 19:10:59,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0295cdbd/90bbd118c596419da14f8ce61f69f830 [2021-08-06 19:10:59,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:10:59,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 19:10:59,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 19:10:59,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 19:10:59,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 19:10:59,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c95531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59, skipping insertion in model container [2021-08-06 19:10:59,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 19:10:59,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 19:10:59,429 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-08-06 19:10:59,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:10:59,656 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 19:10:59,664 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-08-06 19:10:59,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 19:10:59,756 INFO L208 MainTranslator]: Completed translation [2021-08-06 19:10:59,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59 WrapperNode [2021-08-06 19:10:59,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 19:10:59,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:10:59,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:10:59,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:10:59,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:10:59,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:10:59,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:10:59,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:10:59,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:10:59,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:10:59,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:10:59,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:10:59,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (1/1) ... [2021-08-06 19:10:59,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:10:59,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:10:59,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 19:10:59,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 19:10:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 19:10:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 19:10:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 19:10:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 19:10:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-06 19:10:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-08-06 19:10:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-08-06 19:10:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 19:10:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:10:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:10:59,905 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:11:00,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:11:00,253 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-06 19:11:00,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:11:00 BoogieIcfgContainer [2021-08-06 19:11:00,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:11:00,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:11:00,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:11:00,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:11:00,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 07:10:59" (1/3) ... [2021-08-06 19:11:00,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47412d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:11:00, skipping insertion in model container [2021-08-06 19:11:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 07:10:59" (2/3) ... [2021-08-06 19:11:00,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47412d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:11:00, skipping insertion in model container [2021-08-06 19:11:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:11:00" (3/3) ... [2021-08-06 19:11:00,261 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-08-06 19:11:00,264 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:11:00,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:11:00,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:11:00,264 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,284 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,285 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,287 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,288 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,289 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,291 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,291 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,292 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 19:11:00,298 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-06 19:11:00,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:11:00,335 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:11:00,335 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 19:11:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 331 states have (on average 1.29607250755287) internal successors, (429), 347 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 19:11:00,513 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:00,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:00,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1125005046, now seen corresponding path program 1 times [2021-08-06 19:11:00,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:00,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779847632] [2021-08-06 19:11:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:00,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:00,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:00,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779847632] [2021-08-06 19:11:00,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779847632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:11:00,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:11:00,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 19:11:00,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463456094] [2021-08-06 19:11:00,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 19:11:00,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 19:11:00,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 19:11:00,724 INFO L87 Difference]: Start difference. First operand has 348 states, 331 states have (on average 1.29607250755287) internal successors, (429), 347 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:00,736 INFO L93 Difference]: Finished difference Result 346 states and 403 transitions. [2021-08-06 19:11:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 19:11:00,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-06 19:11:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:00,745 INFO L225 Difference]: With dead ends: 346 [2021-08-06 19:11:00,745 INFO L226 Difference]: Without dead ends: 197 [2021-08-06 19:11:00,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 19:11:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-06 19:11:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-08-06 19:11:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.260204081632653) internal successors, (247), 196 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 247 transitions. [2021-08-06 19:11:00,773 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 247 transitions. Word has length 53 [2021-08-06 19:11:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:00,773 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 247 transitions. [2021-08-06 19:11:00,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 247 transitions. [2021-08-06 19:11:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-06 19:11:00,781 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:00,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:00,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:11:00,781 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash 681363384, now seen corresponding path program 1 times [2021-08-06 19:11:00,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:00,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152447959] [2021-08-06 19:11:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:00,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:00,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:00,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152447959] [2021-08-06 19:11:00,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152447959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:11:00,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:11:00,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 19:11:00,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271206520] [2021-08-06 19:11:00,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:11:00,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:11:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:11:00,888 INFO L87 Difference]: Start difference. First operand 197 states and 247 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:00,919 INFO L93 Difference]: Finished difference Result 302 states and 387 transitions. [2021-08-06 19:11:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:11:00,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-06 19:11:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:00,923 INFO L225 Difference]: With dead ends: 302 [2021-08-06 19:11:00,924 INFO L226 Difference]: Without dead ends: 302 [2021-08-06 19:11:00,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:11:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-08-06 19:11:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 212. [2021-08-06 19:11:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 211 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 267 transitions. [2021-08-06 19:11:00,942 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 267 transitions. Word has length 53 [2021-08-06 19:11:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 267 transitions. [2021-08-06 19:11:00,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 267 transitions. [2021-08-06 19:11:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-06 19:11:00,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:00,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:00,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:11:00,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash 797661957, now seen corresponding path program 1 times [2021-08-06 19:11:00,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:00,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088688646] [2021-08-06 19:11:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:00,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:01,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088688646] [2021-08-06 19:11:01,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088688646] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396161574] [2021-08-06 19:11:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:01,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:01,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:01,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-06 19:11:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-06 19:11:01,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:01,745 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:01,747 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-06 19:11:01,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396161574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:11:01,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-06 19:11:01,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-08-06 19:11:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348933068] [2021-08-06 19:11:01,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:11:01,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:11:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:11:01,807 INFO L87 Difference]: Start difference. First operand 212 states and 267 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:01,836 INFO L93 Difference]: Finished difference Result 322 states and 421 transitions. [2021-08-06 19:11:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:11:01,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-08-06 19:11:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:01,837 INFO L225 Difference]: With dead ends: 322 [2021-08-06 19:11:01,838 INFO L226 Difference]: Without dead ends: 322 [2021-08-06 19:11:01,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:11:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-06 19:11:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 213. [2021-08-06 19:11:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 212 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 268 transitions. [2021-08-06 19:11:01,844 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 268 transitions. Word has length 61 [2021-08-06 19:11:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:01,844 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 268 transitions. [2021-08-06 19:11:01,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 268 transitions. [2021-08-06 19:11:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-06 19:11:01,845 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:01,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:01,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:02,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:02,063 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2109370127, now seen corresponding path program 1 times [2021-08-06 19:11:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:02,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238256822] [2021-08-06 19:11:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:02,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:02,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:02,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238256822] [2021-08-06 19:11:02,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238256822] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:02,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257348839] [2021-08-06 19:11:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:02,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:02,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:02,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-06 19:11:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-06 19:11:02,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:02,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-06 19:11:02,715 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 15, result has 6.3 percent of original size [2021-08-06 19:11:02,716 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 15, result has 6.3 percent of original size [2021-08-06 19:11:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:02,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257348839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:11:02,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-06 19:11:02,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-08-06 19:11:02,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405608956] [2021-08-06 19:11:02,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:11:02,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:11:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:11:02,881 INFO L87 Difference]: Start difference. First operand 213 states and 268 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:02,904 INFO L93 Difference]: Finished difference Result 195 states and 235 transitions. [2021-08-06 19:11:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:11:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-08-06 19:11:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:02,905 INFO L225 Difference]: With dead ends: 195 [2021-08-06 19:11:02,905 INFO L226 Difference]: Without dead ends: 174 [2021-08-06 19:11:02,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:11:02,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-08-06 19:11:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-08-06 19:11:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.2196531791907514) internal successors, (211), 173 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2021-08-06 19:11:02,910 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 72 [2021-08-06 19:11:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:02,910 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2021-08-06 19:11:02,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2021-08-06 19:11:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-06 19:11:02,911 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:02,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:02,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:03,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-06 19:11:03,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:03,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1007193751, now seen corresponding path program 2 times [2021-08-06 19:11:03,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:03,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852638846] [2021-08-06 19:11:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:03,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:03,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:03,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852638846] [2021-08-06 19:11:03,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852638846] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:03,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718676518] [2021-08-06 19:11:03,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 19:11:03,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:03,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:03,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:03,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-06 19:11:03,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 19:11:03,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:03,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-06 19:11:03,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:03,859 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:03,860 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:11:03,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718676518] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:03,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:03,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-08-06 19:11:03,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840740398] [2021-08-06 19:11:03,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:11:03,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:11:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:11:03,932 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:04,253 INFO L93 Difference]: Finished difference Result 659 states and 840 transitions. [2021-08-06 19:11:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 19:11:04,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 72 [2021-08-06 19:11:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:04,255 INFO L225 Difference]: With dead ends: 659 [2021-08-06 19:11:04,255 INFO L226 Difference]: Without dead ends: 659 [2021-08-06 19:11:04,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 232.8ms TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:11:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-08-06 19:11:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 380. [2021-08-06 19:11:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.279683377308707) internal successors, (485), 379 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 485 transitions. [2021-08-06 19:11:04,264 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 485 transitions. Word has length 72 [2021-08-06 19:11:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:04,264 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 485 transitions. [2021-08-06 19:11:04,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 485 transitions. [2021-08-06 19:11:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-08-06 19:11:04,265 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:04,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:04,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:04,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:04,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1265961652, now seen corresponding path program 3 times [2021-08-06 19:11:04,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:04,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064162972] [2021-08-06 19:11:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:04,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-06 19:11:04,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064162972] [2021-08-06 19:11:04,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064162972] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420606275] [2021-08-06 19:11:04,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 19:11:04,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:04,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:04,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-06 19:11:04,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-06 19:11:04,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:04,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-06 19:11:04,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:05,438 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:05,439 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-06 19:11:05,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420606275] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:05,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:05,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-06 19:11:05,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428344474] [2021-08-06 19:11:05,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:11:05,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:11:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:11:05,555 INFO L87 Difference]: Start difference. First operand 380 states and 485 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:06,607 INFO L93 Difference]: Finished difference Result 1094 states and 1403 transitions. [2021-08-06 19:11:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-06 19:11:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 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 91 [2021-08-06 19:11:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:06,610 INFO L225 Difference]: With dead ends: 1094 [2021-08-06 19:11:06,611 INFO L226 Difference]: Without dead ends: 1094 [2021-08-06 19:11:06,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 930.0ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-08-06 19:11:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-08-06 19:11:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 716. [2021-08-06 19:11:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.290909090909091) internal successors, (923), 715 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 923 transitions. [2021-08-06 19:11:06,626 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 923 transitions. Word has length 91 [2021-08-06 19:11:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:06,626 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 923 transitions. [2021-08-06 19:11:06,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 923 transitions. [2021-08-06 19:11:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-08-06 19:11:06,628 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:06,628 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:06,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:06,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:06,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:06,845 INFO L82 PathProgramCache]: Analyzing trace with hash 475648655, now seen corresponding path program 4 times [2021-08-06 19:11:06,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:06,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176953734] [2021-08-06 19:11:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:06,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-06 19:11:06,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:06,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176953734] [2021-08-06 19:11:06,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176953734] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:06,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851100066] [2021-08-06 19:11:06,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 19:11:06,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:06,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:07,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:07,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-06 19:11:07,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 19:11:07,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:07,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-06 19:11:07,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:08,052 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:08,053 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-06 19:11:08,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851100066] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:08,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:08,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-08-06 19:11:08,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777210512] [2021-08-06 19:11:08,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 19:11:08,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 19:11:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:11:08,132 INFO L87 Difference]: Start difference. First operand 716 states and 923 transitions. Second operand has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:10,604 INFO L93 Difference]: Finished difference Result 1645 states and 2116 transitions. [2021-08-06 19:11:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-08-06 19:11:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 0 states have call successors, (0), 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 110 [2021-08-06 19:11:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:10,609 INFO L225 Difference]: With dead ends: 1645 [2021-08-06 19:11:10,609 INFO L226 Difference]: Without dead ends: 1645 [2021-08-06 19:11:10,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6818 ImplicationChecksByTransitivity, 2252.9ms TimeCoverageRelationStatistics Valid=3531, Invalid=12725, Unknown=0, NotChecked=0, Total=16256 [2021-08-06 19:11:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2021-08-06 19:11:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1168. [2021-08-06 19:11:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.2947729220222794) internal successors, (1511), 1167 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1511 transitions. [2021-08-06 19:11:10,631 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1511 transitions. Word has length 110 [2021-08-06 19:11:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:10,631 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1511 transitions. [2021-08-06 19:11:10,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1511 transitions. [2021-08-06 19:11:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-06 19:11:10,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:10,634 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:10,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:10,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:10,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash -82463630, now seen corresponding path program 5 times [2021-08-06 19:11:10,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:10,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587621957] [2021-08-06 19:11:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:10,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-08-06 19:11:10,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:10,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587621957] [2021-08-06 19:11:10,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587621957] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:10,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850570058] [2021-08-06 19:11:10,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 19:11:10,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:10,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:11,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-06 19:11:11,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-06 19:11:11,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:11,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 19:11:11,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:12,311 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:12,311 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 52 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-08-06 19:11:12,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850570058] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:12,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:12,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-08-06 19:11:12,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636747535] [2021-08-06 19:11:12,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 19:11:12,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 19:11:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-08-06 19:11:12,391 INFO L87 Difference]: Start difference. First operand 1168 states and 1511 transitions. Second operand has 20 states, 20 states have (on average 8.0) internal successors, (160), 20 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:17,509 INFO L93 Difference]: Finished difference Result 2312 states and 2979 transitions. [2021-08-06 19:11:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2021-08-06 19:11:17,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.0) internal successors, (160), 20 states have internal predecessors, (160), 0 states have call successors, (0), 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 129 [2021-08-06 19:11:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:17,515 INFO L225 Difference]: With dead ends: 2312 [2021-08-06 19:11:17,515 INFO L226 Difference]: Without dead ends: 2312 [2021-08-06 19:11:17,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18727 ImplicationChecksByTransitivity, 4780.6ms TimeCoverageRelationStatistics Valid=8509, Invalid=33311, Unknown=0, NotChecked=0, Total=41820 [2021-08-06 19:11:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-08-06 19:11:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1736. [2021-08-06 19:11:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1735 states have (on average 1.2962536023054756) internal successors, (2249), 1735 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2249 transitions. [2021-08-06 19:11:17,554 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2249 transitions. Word has length 129 [2021-08-06 19:11:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:17,554 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 2249 transitions. [2021-08-06 19:11:17,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.0) internal successors, (160), 20 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2249 transitions. [2021-08-06 19:11:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-08-06 19:11:17,557 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:17,558 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:17,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:17,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:17,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2032490571, now seen corresponding path program 6 times [2021-08-06 19:11:17,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:17,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974929535] [2021-08-06 19:11:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:17,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 5 proven. 115 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-08-06 19:11:17,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:17,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974929535] [2021-08-06 19:11:17,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974929535] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:17,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379241163] [2021-08-06 19:11:17,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 19:11:17,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:17,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:17,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-06 19:11:18,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-08-06 19:11:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 19:11:18,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:19,441 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:19,442 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 5 proven. 115 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-08-06 19:11:19,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379241163] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:19,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:19,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 19:11:19,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721586652] [2021-08-06 19:11:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 19:11:19,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 19:11:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:11:19,494 INFO L87 Difference]: Start difference. First operand 1736 states and 2249 transitions. Second operand has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 15 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:19,658 INFO L93 Difference]: Finished difference Result 2407 states and 3114 transitions. [2021-08-06 19:11:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:11:19,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 15 states have internal predecessors, (128), 0 states have call successors, (0), 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 148 [2021-08-06 19:11:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:19,664 INFO L225 Difference]: With dead ends: 2407 [2021-08-06 19:11:19,664 INFO L226 Difference]: Without dead ends: 2407 [2021-08-06 19:11:19,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-08-06 19:11:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-08-06 19:11:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2059. [2021-08-06 19:11:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2058 states have (on average 1.2968901846452867) internal successors, (2669), 2058 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2669 transitions. [2021-08-06 19:11:19,692 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2669 transitions. Word has length 148 [2021-08-06 19:11:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 2059 states and 2669 transitions. [2021-08-06 19:11:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 15 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2669 transitions. [2021-08-06 19:11:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-08-06 19:11:19,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:19,703 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:19,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:19,917 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:19,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1380212869, now seen corresponding path program 7 times [2021-08-06 19:11:19,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:19,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790170943] [2021-08-06 19:11:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:19,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 5 proven. 171 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-08-06 19:11:20,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:20,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790170943] [2021-08-06 19:11:20,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790170943] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:20,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798544162] [2021-08-06 19:11:20,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 19:11:20,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:20,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:20,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-06 19:11:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 19:11:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:21,825 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:21,826 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-08-06 19:11:21,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798544162] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:21,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:21,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2021-08-06 19:11:21,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740272368] [2021-08-06 19:11:21,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 19:11:21,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 19:11:21,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-08-06 19:11:21,911 INFO L87 Difference]: Start difference. First operand 2059 states and 2669 transitions. Second operand has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:34,485 INFO L93 Difference]: Finished difference Result 3512 states and 4532 transitions. [2021-08-06 19:11:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2021-08-06 19:11:34,486 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 0 states have call successors, (0), 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 159 [2021-08-06 19:11:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:34,494 INFO L225 Difference]: With dead ends: 3512 [2021-08-06 19:11:34,494 INFO L226 Difference]: Without dead ends: 3512 [2021-08-06 19:11:34,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58291 ImplicationChecksByTransitivity, 12091.6ms TimeCoverageRelationStatistics Valid=23633, Invalid=99919, Unknown=0, NotChecked=0, Total=123552 [2021-08-06 19:11:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-08-06 19:11:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2801. [2021-08-06 19:11:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2800 states have (on average 1.2971428571428572) internal successors, (3632), 2800 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3632 transitions. [2021-08-06 19:11:34,564 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3632 transitions. Word has length 159 [2021-08-06 19:11:34,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:34,564 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3632 transitions. [2021-08-06 19:11:34,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3632 transitions. [2021-08-06 19:11:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-08-06 19:11:34,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:34,568 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:34,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:34,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-06 19:11:34,785 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2016846648, now seen corresponding path program 8 times [2021-08-06 19:11:34,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:34,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13637723] [2021-08-06 19:11:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:34,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 238 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-08-06 19:11:35,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:35,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13637723] [2021-08-06 19:11:35,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13637723] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:35,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562260650] [2021-08-06 19:11:35,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 19:11:35,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:35,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:35,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-06 19:11:35,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 19:11:35,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 19:11:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:36,838 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:36,838 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 238 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-08-06 19:11:36,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562260650] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:36,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:36,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-08-06 19:11:36,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997876936] [2021-08-06 19:11:36,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 19:11:36,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 19:11:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-06 19:11:36,894 INFO L87 Difference]: Start difference. First operand 2801 states and 3632 transitions. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:11:37,173 INFO L93 Difference]: Finished difference Result 3593 states and 4652 transitions. [2021-08-06 19:11:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 19:11:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 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 178 [2021-08-06 19:11:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:11:37,184 INFO L225 Difference]: With dead ends: 3593 [2021-08-06 19:11:37,184 INFO L226 Difference]: Without dead ends: 3593 [2021-08-06 19:11:37,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 336.9ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 19:11:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2021-08-06 19:11:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3182. [2021-08-06 19:11:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.297390757623389) internal successors, (4127), 3181 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4127 transitions. [2021-08-06 19:11:37,233 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4127 transitions. Word has length 178 [2021-08-06 19:11:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:11:37,233 INFO L470 AbstractCegarLoop]: Abstraction has 3182 states and 4127 transitions. [2021-08-06 19:11:37,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:11:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4127 transitions. [2021-08-06 19:11:37,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-08-06 19:11:37,239 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:11:37,239 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:11:37,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-06 19:11:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:37,453 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:11:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:11:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2105292392, now seen corresponding path program 9 times [2021-08-06 19:11:37,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:11:37,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267744124] [2021-08-06 19:11:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:11:37,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:11:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:11:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 6 proven. 316 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-08-06 19:11:37,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:11:37,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267744124] [2021-08-06 19:11:37,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267744124] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:37,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094110504] [2021-08-06 19:11:37,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 19:11:37,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:11:37,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:11:37,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:11:37,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-06 19:11:38,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-08-06 19:11:38,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:11:38,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 19:11:38,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:11:39,946 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:39,947 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:11:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 29 proven. 126 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-08-06 19:11:40,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094110504] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:11:40,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:11:40,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2021-08-06 19:11:40,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35578063] [2021-08-06 19:11:40,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-06 19:11:40,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:11:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-06 19:11:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2021-08-06 19:11:40,040 INFO L87 Difference]: Start difference. First operand 3182 states and 4127 transitions. Second operand has 32 states, 32 states have (on average 6.875) internal successors, (220), 32 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:12:06,470 INFO L93 Difference]: Finished difference Result 4944 states and 6385 transitions. [2021-08-06 19:12:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 521 states. [2021-08-06 19:12:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.875) internal successors, (220), 32 states have internal predecessors, (220), 0 states have call successors, (0), 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 189 [2021-08-06 19:12:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:12:06,482 INFO L225 Difference]: With dead ends: 4944 [2021-08-06 19:12:06,482 INFO L226 Difference]: Without dead ends: 4944 [2021-08-06 19:12:06,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138769 ImplicationChecksByTransitivity, 25623.0ms TimeCoverageRelationStatistics Valid=52541, Invalid=233149, Unknown=0, NotChecked=0, Total=285690 [2021-08-06 19:12:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2021-08-06 19:12:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4098. [2021-08-06 19:12:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.2972907005125702) internal successors, (5315), 4097 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5315 transitions. [2021-08-06 19:12:06,551 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5315 transitions. Word has length 189 [2021-08-06 19:12:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:12:06,551 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 5315 transitions. [2021-08-06 19:12:06,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.875) internal successors, (220), 32 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5315 transitions. [2021-08-06 19:12:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-08-06 19:12:06,558 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:12:06,558 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:12:06,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-06 19:12:06,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-06 19:12:06,779 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:12:06,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:12:06,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1427033819, now seen corresponding path program 10 times [2021-08-06 19:12:06,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:12:06,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181061105] [2021-08-06 19:12:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:12:06,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:12:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:12:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 7 proven. 405 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-08-06 19:12:07,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:12:07,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181061105] [2021-08-06 19:12:07,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181061105] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:12:07,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917543209] [2021-08-06 19:12:07,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 19:12:07,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:12:07,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:12:07,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:12:07,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-06 19:12:07,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 19:12:07,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:12:07,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 19:12:07,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:12:09,615 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:12:09,616 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:12:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 33 proven. 175 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-08-06 19:12:09,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917543209] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:12:09,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:12:09,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2021-08-06 19:12:09,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955987790] [2021-08-06 19:12:09,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-06 19:12:09,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:12:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-06 19:12:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 19:12:09,700 INFO L87 Difference]: Start difference. First operand 4098 states and 5315 transitions. Second operand has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:12:50,682 INFO L93 Difference]: Finished difference Result 6075 states and 7848 transitions. [2021-08-06 19:12:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 668 states. [2021-08-06 19:12:50,682 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 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 208 [2021-08-06 19:12:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:12:50,696 INFO L225 Difference]: With dead ends: 6075 [2021-08-06 19:12:50,696 INFO L226 Difference]: Without dead ends: 6075 [2021-08-06 19:12:50,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230185 ImplicationChecksByTransitivity, 39909.1ms TimeCoverageRelationStatistics Valid=84141, Invalid=383031, Unknown=0, NotChecked=0, Total=467172 [2021-08-06 19:12:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-08-06 19:12:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 5130. [2021-08-06 19:12:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5129 states have (on average 1.297133944238643) internal successors, (6653), 5129 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 6653 transitions. [2021-08-06 19:12:50,775 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 6653 transitions. Word has length 208 [2021-08-06 19:12:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:12:50,776 INFO L470 AbstractCegarLoop]: Abstraction has 5130 states and 6653 transitions. [2021-08-06 19:12:50,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:12:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 6653 transitions. [2021-08-06 19:12:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-08-06 19:12:50,784 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:12:50,784 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:12:50,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-06 19:12:51,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-06 19:12:51,009 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:12:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:12:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1745612990, now seen corresponding path program 11 times [2021-08-06 19:12:51,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:12:51,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500820667] [2021-08-06 19:12:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:12:51,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:12:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:12:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 8 proven. 505 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-08-06 19:12:51,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:12:51,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500820667] [2021-08-06 19:12:51,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500820667] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:12:51,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387493918] [2021-08-06 19:12:51,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 19:12:51,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:12:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:12:51,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:12:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-06 19:12:52,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-06 19:12:52,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:12:52,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 19:12:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:12:54,180 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:12:54,189 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:12:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 37 proven. 232 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-08-06 19:12:54,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387493918] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:12:54,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:12:54,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 40 [2021-08-06 19:12:54,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312040095] [2021-08-06 19:12:54,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-06 19:12:54,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:12:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-06 19:12:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2021-08-06 19:12:54,267 INFO L87 Difference]: Start difference. First operand 5130 states and 6653 transitions. Second operand has 40 states, 40 states have (on average 6.45) internal successors, (258), 40 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:13:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:13:55,860 INFO L93 Difference]: Finished difference Result 7322 states and 9461 transitions. [2021-08-06 19:13:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 833 states. [2021-08-06 19:13:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.45) internal successors, (258), 40 states have internal predecessors, (258), 0 states have call successors, (0), 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 227 [2021-08-06 19:13:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:13:55,871 INFO L225 Difference]: With dead ends: 7322 [2021-08-06 19:13:55,872 INFO L226 Difference]: Without dead ends: 7322 [2021-08-06 19:13:55,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 849 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360322 ImplicationChecksByTransitivity, 60160.0ms TimeCoverageRelationStatistics Valid=128109, Invalid=595241, Unknown=0, NotChecked=0, Total=723350 [2021-08-06 19:13:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2021-08-06 19:13:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 6278. [2021-08-06 19:13:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6277 states have (on average 1.2969571451330253) internal successors, (8141), 6277 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:13:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8141 transitions. [2021-08-06 19:13:55,973 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8141 transitions. Word has length 227 [2021-08-06 19:13:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:13:55,973 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 8141 transitions. [2021-08-06 19:13:55,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.45) internal successors, (258), 40 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:13:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8141 transitions. [2021-08-06 19:13:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-08-06 19:13:55,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:13:55,984 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:13:56,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-06 19:13:56,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-06 19:13:56,206 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:13:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:13:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash 966659073, now seen corresponding path program 12 times [2021-08-06 19:13:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:13:56,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668118733] [2021-08-06 19:13:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:13:56,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:13:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:13:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 9 proven. 616 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-08-06 19:13:56,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:13:56,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668118733] [2021-08-06 19:13:56,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668118733] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:13:56,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710550734] [2021-08-06 19:13:56,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 19:13:56,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:13:56,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:13:56,596 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:13:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-06 19:13:57,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-08-06 19:13:57,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:13:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-06 19:13:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:13:59,459 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:13:59,460 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:13:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 9 proven. 616 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-08-06 19:13:59,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710550734] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:13:59,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:13:59,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-08-06 19:13:59,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070969655] [2021-08-06 19:13:59,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 19:13:59,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:13:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 19:13:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-08-06 19:13:59,514 INFO L87 Difference]: Start difference. First operand 6278 states and 8141 transitions. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:14:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:14:00,045 INFO L93 Difference]: Finished difference Result 7433 states and 9626 transitions. [2021-08-06 19:14:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-06 19:14:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 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 246 [2021-08-06 19:14:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:14:00,055 INFO L225 Difference]: With dead ends: 7433 [2021-08-06 19:14:00,055 INFO L226 Difference]: Without dead ends: 7433 [2021-08-06 19:14:00,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 696.0ms TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-08-06 19:14:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2021-08-06 19:14:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6833. [2021-08-06 19:14:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 6832 states have (on average 1.2969847775175645) internal successors, (8861), 6832 states have internal predecessors, (8861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:14:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 8861 transitions. [2021-08-06 19:14:00,133 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 8861 transitions. Word has length 246 [2021-08-06 19:14:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:14:00,133 INFO L470 AbstractCegarLoop]: Abstraction has 6833 states and 8861 transitions. [2021-08-06 19:14:00,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:14:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 8861 transitions. [2021-08-06 19:14:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-08-06 19:14:00,145 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:14:00,145 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:14:00,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-06 19:14:00,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-06 19:14:00,364 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:14:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:14:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash -232320815, now seen corresponding path program 13 times [2021-08-06 19:14:00,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:14:00,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771212052] [2021-08-06 19:14:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:14:00,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:14:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:14:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 9 proven. 738 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-08-06 19:14:00,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:14:00,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771212052] [2021-08-06 19:14:00,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771212052] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:14:00,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918215632] [2021-08-06 19:14:00,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 19:14:00,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:14:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:14:00,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:14:00,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-06 19:14:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:14:02,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 19:14:02,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:14:04,207 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:14:04,208 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:14:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 45 proven. 297 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-08-06 19:14:04,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918215632] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:14:04,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:14:04,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21] total 46 [2021-08-06 19:14:04,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323752214] [2021-08-06 19:14:04,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-06 19:14:04,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:14:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-06 19:14:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1756, Unknown=0, NotChecked=0, Total=2070 [2021-08-06 19:14:04,287 INFO L87 Difference]: Start difference. First operand 6833 states and 8861 transitions. Second operand has 46 states, 46 states have (on average 6.260869565217392) internal successors, (288), 46 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:15:50,017 INFO L93 Difference]: Finished difference Result 9334 states and 12064 transitions. [2021-08-06 19:15:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1103 states. [2021-08-06 19:15:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.260869565217392) internal successors, (288), 46 states have internal predecessors, (288), 0 states have call successors, (0), 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 257 [2021-08-06 19:15:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:15:50,042 INFO L225 Difference]: With dead ends: 9334 [2021-08-06 19:15:50,042 INFO L226 Difference]: Without dead ends: 9334 [2021-08-06 19:15:50,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1509 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 1122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636043 ImplicationChecksByTransitivity, 103097.8ms TimeCoverageRelationStatistics Valid=219426, Invalid=1042826, Unknown=0, NotChecked=0, Total=1262252 [2021-08-06 19:15:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2021-08-06 19:15:50,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 8155. [2021-08-06 19:15:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8155 states, 8154 states have (on average 1.2967868530782438) internal successors, (10574), 8154 states have internal predecessors, (10574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8155 states to 8155 states and 10574 transitions. [2021-08-06 19:15:50,212 INFO L78 Accepts]: Start accepts. Automaton has 8155 states and 10574 transitions. Word has length 257 [2021-08-06 19:15:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:15:50,212 INFO L470 AbstractCegarLoop]: Abstraction has 8155 states and 10574 transitions. [2021-08-06 19:15:50,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.260869565217392) internal successors, (288), 46 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8155 states and 10574 transitions. [2021-08-06 19:15:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-08-06 19:15:50,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:15:50,226 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:15:50,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-06 19:15:50,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:15:50,445 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:15:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:15:50,445 INFO L82 PathProgramCache]: Analyzing trace with hash 712127764, now seen corresponding path program 14 times [2021-08-06 19:15:50,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:15:50,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651334317] [2021-08-06 19:15:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:15:50,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:15:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:15:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 10 proven. 871 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-08-06 19:15:50,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:15:50,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651334317] [2021-08-06 19:15:50,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651334317] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:15:50,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118841155] [2021-08-06 19:15:50,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 19:15:50,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:15:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:15:50,946 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:15:50,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-06 19:15:52,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 19:15:52,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:15:52,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-06 19:15:52,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:15:54,353 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:15:54,354 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:15:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 10 proven. 871 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-08-06 19:15:54,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118841155] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:15:54,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:15:54,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-08-06 19:15:54,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436150205] [2021-08-06 19:15:54,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-06 19:15:54,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:15:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-06 19:15:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-08-06 19:15:54,412 INFO L87 Difference]: Start difference. First operand 8155 states and 10574 transitions. Second operand has 31 states, 31 states have (on average 6.967741935483871) internal successors, (216), 31 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:15:55,055 INFO L93 Difference]: Finished difference Result 9431 states and 12214 transitions. [2021-08-06 19:15:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-06 19:15:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.967741935483871) internal successors, (216), 31 states have internal predecessors, (216), 0 states have call successors, (0), 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 276 [2021-08-06 19:15:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:15:55,069 INFO L225 Difference]: With dead ends: 9431 [2021-08-06 19:15:55,069 INFO L226 Difference]: Without dead ends: 9431 [2021-08-06 19:15:55,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 856.7ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-08-06 19:15:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2021-08-06 19:15:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 8768. [2021-08-06 19:15:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8768 states, 8767 states have (on average 1.2967947986768564) internal successors, (11369), 8767 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 11369 transitions. [2021-08-06 19:15:55,159 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 11369 transitions. Word has length 276 [2021-08-06 19:15:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:15:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 8768 states and 11369 transitions. [2021-08-06 19:15:55,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.967741935483871) internal successors, (216), 31 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:15:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 11369 transitions. [2021-08-06 19:15:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-08-06 19:15:55,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:15:55,172 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:15:55,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-06 19:15:55,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-06 19:15:55,394 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:15:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:15:55,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1384190492, now seen corresponding path program 15 times [2021-08-06 19:15:55,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:15:55,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3106302] [2021-08-06 19:15:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:15:55,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:15:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:15:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 10 proven. 1015 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-08-06 19:15:55,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:15:55,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3106302] [2021-08-06 19:15:55,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3106302] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:15:55,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909644044] [2021-08-06 19:15:55,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 19:15:55,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:15:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:15:55,932 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:15:55,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-06 19:15:57,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-06 19:15:57,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:15:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-06 19:15:57,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:16:00,167 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:16:00,168 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:16:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 53 proven. 370 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-08-06 19:16:00,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909644044] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:16:00,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:16:00,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 23] total 52 [2021-08-06 19:16:00,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108081649] [2021-08-06 19:16:00,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-06 19:16:00,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:16:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-06 19:16:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2255, Unknown=0, NotChecked=0, Total=2652 [2021-08-06 19:16:00,246 INFO L87 Difference]: Start difference. First operand 8768 states and 11369 transitions. Second operand has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:18:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:18:47,441 INFO L93 Difference]: Finished difference Result 11578 states and 14967 transitions. [2021-08-06 19:18:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1409 states. [2021-08-06 19:18:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 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 287 [2021-08-06 19:18:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:18:47,460 INFO L225 Difference]: With dead ends: 11578 [2021-08-06 19:18:47,460 INFO L226 Difference]: Without dead ends: 11578 [2021-08-06 19:18:47,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1883 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 1431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042941 ImplicationChecksByTransitivity, 163275.4ms TimeCoverageRelationStatistics Valid=351576, Invalid=1700480, Unknown=0, NotChecked=0, Total=2052056 [2021-08-06 19:18:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2021-08-06 19:18:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 10264. [2021-08-06 19:18:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10264 states, 10263 states have (on average 1.2965994348631005) internal successors, (13307), 10263 states have internal predecessors, (13307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:18:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10264 states to 10264 states and 13307 transitions. [2021-08-06 19:18:47,688 INFO L78 Accepts]: Start accepts. Automaton has 10264 states and 13307 transitions. Word has length 287 [2021-08-06 19:18:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:18:47,688 INFO L470 AbstractCegarLoop]: Abstraction has 10264 states and 13307 transitions. [2021-08-06 19:18:47,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:18:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10264 states and 13307 transitions. [2021-08-06 19:18:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-08-06 19:18:47,704 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:18:47,704 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:18:47,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-06 19:18:47,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-06 19:18:47,925 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:18:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:18:47,925 INFO L82 PathProgramCache]: Analyzing trace with hash 654908199, now seen corresponding path program 16 times [2021-08-06 19:18:47,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:18:47,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176616708] [2021-08-06 19:18:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:18:47,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:18:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:18:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 11 proven. 1170 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-08-06 19:18:48,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:18:48,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176616708] [2021-08-06 19:18:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176616708] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:18:48,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266375234] [2021-08-06 19:18:48,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 19:18:48,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:18:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:18:48,523 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:18:48,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-06 19:18:50,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 19:18:50,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:18:50,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-06 19:18:50,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:18:53,158 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:18:53,158 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:18:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 57 proven. 451 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2021-08-06 19:18:53,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266375234] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:18:53,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:18:53,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 25] total 56 [2021-08-06 19:18:53,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697419598] [2021-08-06 19:18:53,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-08-06 19:18:53,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:18:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-08-06 19:18:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=2625, Unknown=0, NotChecked=0, Total=3080 [2021-08-06 19:18:53,239 INFO L87 Difference]: Start difference. First operand 10264 states and 13307 transitions. Second operand has 56 states, 56 states have (on average 6.017857142857143) internal successors, (337), 56 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:22:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:22:41,357 INFO L93 Difference]: Finished difference Result 13289 states and 17180 transitions. [2021-08-06 19:22:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1646 states. [2021-08-06 19:22:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 6.017857142857143) internal successors, (337), 56 states have internal predecessors, (337), 0 states have call successors, (0), 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 306 [2021-08-06 19:22:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:22:41,375 INFO L225 Difference]: With dead ends: 13289 [2021-08-06 19:22:41,375 INFO L226 Difference]: Without dead ends: 13289 [2021-08-06 19:22:41,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2168 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 1670 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427225 ImplicationChecksByTransitivity, 222583.1ms TimeCoverageRelationStatistics Valid=474443, Invalid=2319469, Unknown=0, NotChecked=0, Total=2793912 [2021-08-06 19:22:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13289 states. [2021-08-06 19:22:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13289 to 11876. [2021-08-06 19:22:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11876 states, 11875 states have (on average 1.296421052631579) internal successors, (15395), 11875 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:22:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11876 states to 11876 states and 15395 transitions. [2021-08-06 19:22:41,679 INFO L78 Accepts]: Start accepts. Automaton has 11876 states and 15395 transitions. Word has length 306 [2021-08-06 19:22:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:22:41,679 INFO L470 AbstractCegarLoop]: Abstraction has 11876 states and 15395 transitions. [2021-08-06 19:22:41,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 6.017857142857143) internal successors, (337), 56 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:22:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11876 states and 15395 transitions. [2021-08-06 19:22:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-08-06 19:22:41,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:22:41,692 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:22:41,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-06 19:22:41,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:22:41,893 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-08-06 19:22:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:22:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -108757750, now seen corresponding path program 17 times [2021-08-06 19:22:41,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:22:41,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774997912] [2021-08-06 19:22:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:22:41,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:22:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:22:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 12 proven. 1336 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-08-06 19:22:42,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:22:42,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774997912] [2021-08-06 19:22:42,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774997912] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:22:42,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314689433] [2021-08-06 19:22:42,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 19:22:42,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:22:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:22:42,543 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 19:22:42,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-06 19:22:44,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-08-06 19:22:44,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 19:22:44,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-06 19:22:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 19:22:47,419 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:22:47,420 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 6, result has 14.3 percent of original size [2021-08-06 19:22:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 61 proven. 540 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-08-06 19:22:47,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314689433] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 19:22:47,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 19:22:47,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 27] total 60 [2021-08-06 19:22:47,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830617143] [2021-08-06 19:22:47,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-08-06 19:22:47,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:22:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-08-06 19:22:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=3023, Unknown=0, NotChecked=0, Total=3540 [2021-08-06 19:22:47,498 INFO L87 Difference]: Start difference. First operand 11876 states and 15395 transitions. Second operand has 60 states, 60 states have (on average 5.933333333333334) internal successors, (356), 60 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-08-06 19:23:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 798 states. [2021-08-06 19:23:35,506 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 19:23:35,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-06 19:23:35,548 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-06 19:23:35,548 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-06 19:23:35,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 19:23:35,730 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (11876states) and FLOYD_HOARE automaton (currently 798 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5531 states constructed, input type IntersectNwa). [2021-08-06 19:23:35,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:23:35,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:23:35,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:23:35,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:23:35 BasicIcfg [2021-08-06 19:23:35,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:23:35,736 INFO L168 Benchmark]: Toolchain (without parser) took 756480.50 ms. Allocated memory was 213.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 175.4 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 262.2 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 213.9 MB. Free memory is still 194.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.81 ms. Allocated memory is still 213.9 MB. Free memory was 175.2 MB in the beginning and 169.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.41 ms. Allocated memory is still 213.9 MB. Free memory was 169.9 MB in the beginning and 167.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: Boogie Preprocessor took 21.47 ms. Allocated memory is still 213.9 MB. Free memory was 167.3 MB in the beginning and 166.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: RCFGBuilder took 424.35 ms. Allocated memory is still 213.9 MB. Free memory was 165.7 MB in the beginning and 139.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L168 Benchmark]: TraceAbstraction took 755479.83 ms. Allocated memory was 213.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 138.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 227.3 MB. Max. memory is 8.0 GB. [2021-08-06 19:23:35,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 213.9 MB. Free memory is still 194.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 500.81 ms. Allocated memory is still 213.9 MB. Free memory was 175.2 MB in the beginning and 169.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.41 ms. Allocated memory is still 213.9 MB. Free memory was 169.9 MB in the beginning and 167.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.47 ms. Allocated memory is still 213.9 MB. Free memory was 167.3 MB in the beginning and 166.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.35 ms. Allocated memory is still 213.9 MB. Free memory was 165.7 MB in the beginning and 139.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 755479.83 ms. Allocated memory was 213.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 138.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 227.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 429, positive: 357, positive conditional: 357, positive unconditional: 0, negative: 72, negative conditional: 72, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 361, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 361, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 361, positive: 355, positive conditional: 0, positive unconditional: 355, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 361, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 361, unknown conditional: 0, unknown unconditional: 361] , Statistics on independence cache: Total cache size (in pairs): 361, Positive cache size: 357, Positive conditional cache size: 0, Positive unconditional cache size: 357, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Independence queries for same thread: 68 - 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 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11876states) and FLOYD_HOARE automaton (currently 798 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5531 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11876states) and FLOYD_HOARE automaton (currently 798 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5531 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 755403.9ms, OverallIterations: 20, TraceHistogramMax: 16, EmptinessCheckTime: 150.6ms, AutomataDifference: 701521.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 154.3ms, PartialOrderReductionTime: 137.5ms, HoareTripleCheckerStatistics: 1634 SDtfs, 111682 SDslu, 15531 SDs, 0 SdLazy, 3998 SolverSat, 12502 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8597.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12324 GetRequests, 4261 SyntacticMatches, 0 SemanticMatches, 8063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4251229 ImplicationChecksByTransitivity, 683639.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11876occurred in iteration=19, InterpolantAutomatonStates: 7062, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 927.2ms AutomataMinimizationTime, 19 MinimizatonAttempts, 11383 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 569.1ms SsaConstructionTime, 1870.3ms SatisfiabilityAnalysisTime, 32219.7ms InterpolantComputationTime, 6788 NumberOfCodeBlocks, 6722 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 6750 ConstructedInterpolants, 0 QuantifiedInterpolants, 16388 SizeOfPredicates, 228 NumberOfNonLiveVariables, 6988 ConjunctsInSsa, 264 ConjunctsInUnsatCore, 38 InterpolantComputations, 4 PerfectInterpolantSequences, 9902/21726 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown