/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 15:22:40,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 15:22:40,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 15:22:40,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 15:22:41,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 15:22:41,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 15:22:41,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 15:22:41,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-05-21 15:22:41,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 15:22:41,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 15:22:41,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 15:22:41,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 15:22:41,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 15:22:41,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 15:22:41,094 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 15:22:41,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 15:22:41,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 15:22:41,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 15:22:41,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 15:22:41,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 15:22:41,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 15:22:41,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 15:22:41,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 15:22:41,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 15:22:41,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 15:22:41,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 15:22:41,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 15:22:41,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 15:22:41,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 15:22:41,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 15:22:41,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 15:22:41,423 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 15:22:41,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2021-05-21 15:22:41,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a4e494f/046f2f3dd2a54ce88a6d22761d3601f8/FLAGf23c88ea6 [2021-05-21 15:22:42,151 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 15:22:42,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2021-05-21 15:22:42,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a4e494f/046f2f3dd2a54ce88a6d22761d3601f8/FLAGf23c88ea6 [2021-05-21 15:22:42,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a4e494f/046f2f3dd2a54ce88a6d22761d3601f8 [2021-05-21 15:22:42,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 15:22:42,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 15:22:42,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 15:22:42,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 15:22:42,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 15:22:42,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 03:22:42" (1/1) ... [2021-05-21 15:22:42,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b36699f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:42, skipping insertion in model container [2021-05-21 15:22:42,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 03:22:42" (1/1) ... [2021-05-21 15:22:42,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 15:22:42,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 15:22:42,787 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/indexer.i[47556,47569] [2021-05-21 15:22:42,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 15:22:42,873 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 15:22:42,906 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/indexer.i[47556,47569] [2021-05-21 15:22:42,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 15:22:43,013 INFO L208 MainTranslator]: Completed translation [2021-05-21 15:22:43,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43 WrapperNode [2021-05-21 15:22:43,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 15:22:43,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 15:22:43,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 15:22:43,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 15:22:43,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 15:22:43,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 15:22:43,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 15:22:43,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 15:22:43,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... [2021-05-21 15:22:43,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 15:22:43,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 15:22:43,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 15:22:43,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 15:22:43,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 15:22:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 15:22:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 15:22:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-21 15:22:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2021-05-21 15:22:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2021-05-21 15:22:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 15:22:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-05-21 15:22:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 15:22:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 15:22:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 15:22:43,150 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 15:22:43,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 15:22:43,526 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-05-21 15:22:43,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 03:22:43 BoogieIcfgContainer [2021-05-21 15:22:43,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 15:22:43,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 15:22:43,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 15:22:43,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 15:22:43,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 03:22:42" (1/3) ... [2021-05-21 15:22:43,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ccc73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 03:22:43, skipping insertion in model container [2021-05-21 15:22:43,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 03:22:43" (2/3) ... [2021-05-21 15:22:43,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ccc73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 03:22:43, skipping insertion in model container [2021-05-21 15:22:43,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 03:22:43" (3/3) ... [2021-05-21 15:22:43,533 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2021-05-21 15:22:43,538 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 15:22:43,538 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 15:22:43,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 15:22:43,539 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 15:22:43,583 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,583 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,583 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,583 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,584 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,585 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,586 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,587 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,588 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,589 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,590 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,591 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,592 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,592 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,592 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,592 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,592 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,595 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,599 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,599 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,599 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,599 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,599 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,600 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,601 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,602 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,602 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,602 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,602 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,602 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,603 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,604 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,606 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,607 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,607 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,608 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,611 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,611 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,612 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,613 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,614 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,615 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,616 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,617 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,618 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,620 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,620 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,620 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,621 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,622 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,623 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 15:22:43,637 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-21 15:22:43,657 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 15:22:43,680 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 15:22:43,680 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 15:22:43,680 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 15:22:43,680 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 15:22:43,680 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 15:22:43,680 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 15:22:43,680 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 15:22:43,680 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 15:22:43,693 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 113 transitions, 234 flow [2021-05-21 15:22:43,761 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1244 states, 1237 states have (on average 2.215844785772029) internal successors, (2741), 1243 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 1237 states have (on average 2.215844785772029) internal successors, (2741), 1243 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-21 15:22:43,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:43,777 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-21 15:22:43,778 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:43,786 INFO L82 PathProgramCache]: Analyzing trace with hash -197641480, now seen corresponding path program 1 times [2021-05-21 15:22:43,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:43,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005474223] [2021-05-21 15:22:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:43,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:43,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005474223] [2021-05-21 15:22:43,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005474223] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 15:22:43,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 15:22:43,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 15:22:43,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610829883] [2021-05-21 15:22:43,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-21 15:22:43,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-21 15:22:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-21 15:22:43,992 INFO L87 Difference]: Start difference. First operand has 1244 states, 1237 states have (on average 2.215844785772029) internal successors, (2741), 1243 states have internal predecessors, (2741), 0 states have call successors, (0), 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 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:44,026 INFO L93 Difference]: Finished difference Result 1218 states and 2443 transitions. [2021-05-21 15:22:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-21 15:22:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 37 [2021-05-21 15:22:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:44,047 INFO L225 Difference]: With dead ends: 1218 [2021-05-21 15:22:44,047 INFO L226 Difference]: Without dead ends: 1158 [2021-05-21 15:22:44,048 INFO L777 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 [2021-05-21 15:22:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-05-21 15:22:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-05-21 15:22:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1154 states have (on average 2.024263431542461) internal successors, (2336), 1157 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2336 transitions. [2021-05-21 15:22:44,163 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2336 transitions. Word has length 37 [2021-05-21 15:22:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:44,163 INFO L482 AbstractCegarLoop]: Abstraction has 1158 states and 2336 transitions. [2021-05-21 15:22:44,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2336 transitions. [2021-05-21 15:22:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-21 15:22:44,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:44,165 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-21 15:22:44,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 15:22:44,166 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:44,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1042113351, now seen corresponding path program 1 times [2021-05-21 15:22:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:44,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721013267] [2021-05-21 15:22:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:44,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:44,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721013267] [2021-05-21 15:22:44,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721013267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 15:22:44,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 15:22:44,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 15:22:44,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193580147] [2021-05-21 15:22:44,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 15:22:44,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 15:22:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 15:22:44,281 INFO L87 Difference]: Start difference. First operand 1158 states and 2336 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:44,367 INFO L93 Difference]: Finished difference Result 742 states and 1438 transitions. [2021-05-21 15:22:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 15:22:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 37 [2021-05-21 15:22:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:44,371 INFO L225 Difference]: With dead ends: 742 [2021-05-21 15:22:44,371 INFO L226 Difference]: Without dead ends: 742 [2021-05-21 15:22:44,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 15:22:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-05-21 15:22:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 739. [2021-05-21 15:22:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 736 states have (on average 1.9497282608695652) internal successors, (1435), 738 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1435 transitions. [2021-05-21 15:22:44,390 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1435 transitions. Word has length 37 [2021-05-21 15:22:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:44,390 INFO L482 AbstractCegarLoop]: Abstraction has 739 states and 1435 transitions. [2021-05-21 15:22:44,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1435 transitions. [2021-05-21 15:22:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-21 15:22:44,397 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:44,398 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-21 15:22:44,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 15:22:44,400 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash 345317595, now seen corresponding path program 1 times [2021-05-21 15:22:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:44,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698767878] [2021-05-21 15:22:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:44,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:44,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698767878] [2021-05-21 15:22:44,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698767878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:44,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143322368] [2021-05-21 15:22:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:44,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-21 15:22:44,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:44,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143322368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:44,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:44,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 15:22:44,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89454373] [2021-05-21 15:22:44,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 15:22:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 15:22:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 15:22:44,753 INFO L87 Difference]: Start difference. First operand 739 states and 1435 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:44,840 INFO L93 Difference]: Finished difference Result 747 states and 1443 transitions. [2021-05-21 15:22:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 15:22:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-05-21 15:22:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:44,844 INFO L225 Difference]: With dead ends: 747 [2021-05-21 15:22:44,844 INFO L226 Difference]: Without dead ends: 747 [2021-05-21 15:22:44,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-21 15:22:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-05-21 15:22:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 744. [2021-05-21 15:22:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 741 states have (on average 1.94331983805668) internal successors, (1440), 743 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1440 transitions. [2021-05-21 15:22:44,867 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1440 transitions. Word has length 42 [2021-05-21 15:22:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:44,867 INFO L482 AbstractCegarLoop]: Abstraction has 744 states and 1440 transitions. [2021-05-21 15:22:44,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1440 transitions. [2021-05-21 15:22:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-21 15:22:44,869 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:44,870 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-21 15:22:45,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-21 15:22:45,085 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash 450486777, now seen corresponding path program 2 times [2021-05-21 15:22:45,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:45,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785328834] [2021-05-21 15:22:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:45,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:45,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785328834] [2021-05-21 15:22:45,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785328834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:45,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494227305] [2021-05-21 15:22:45,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:45,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:22:45,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:45,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-21 15:22:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:45,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494227305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:45,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:45,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-05-21 15:22:45,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215960491] [2021-05-21 15:22:45,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 15:22:45,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:45,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 15:22:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-21 15:22:45,386 INFO L87 Difference]: Start difference. First operand 744 states and 1440 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:45,479 INFO L93 Difference]: Finished difference Result 752 states and 1448 transitions. [2021-05-21 15:22:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 15:22:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-05-21 15:22:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:45,482 INFO L225 Difference]: With dead ends: 752 [2021-05-21 15:22:45,483 INFO L226 Difference]: Without dead ends: 752 [2021-05-21 15:22:45,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-05-21 15:22:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-05-21 15:22:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 749. [2021-05-21 15:22:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 746 states have (on average 1.9369973190348526) internal successors, (1445), 748 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1445 transitions. [2021-05-21 15:22:45,501 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1445 transitions. Word has length 47 [2021-05-21 15:22:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:45,502 INFO L482 AbstractCegarLoop]: Abstraction has 749 states and 1445 transitions. [2021-05-21 15:22:45,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1445 transitions. [2021-05-21 15:22:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 15:22:45,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:45,502 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 15:22:45,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:45,725 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -375970917, now seen corresponding path program 3 times [2021-05-21 15:22:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:45,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177312695] [2021-05-21 15:22:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:45,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:45,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177312695] [2021-05-21 15:22:45,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177312695] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:45,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123181686] [2021-05-21 15:22:45,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:45,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-21 15:22:45,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:45,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-21 15:22:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:46,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123181686] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:46,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:46,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-05-21 15:22:46,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291824109] [2021-05-21 15:22:46,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 15:22:46,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 15:22:46,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-21 15:22:46,016 INFO L87 Difference]: Start difference. First operand 749 states and 1445 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:46,124 INFO L93 Difference]: Finished difference Result 757 states and 1453 transitions. [2021-05-21 15:22:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 15:22:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 15:22:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:46,127 INFO L225 Difference]: With dead ends: 757 [2021-05-21 15:22:46,128 INFO L226 Difference]: Without dead ends: 757 [2021-05-21 15:22:46,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-05-21 15:22:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-05-21 15:22:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 754. [2021-05-21 15:22:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 751 states have (on average 1.9307589880159788) internal successors, (1450), 753 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1450 transitions. [2021-05-21 15:22:46,145 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1450 transitions. Word has length 52 [2021-05-21 15:22:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:46,145 INFO L482 AbstractCegarLoop]: Abstraction has 754 states and 1450 transitions. [2021-05-21 15:22:46,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1450 transitions. [2021-05-21 15:22:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 15:22:46,146 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:46,146 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-05-21 15:22:46,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:46,361 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -932473031, now seen corresponding path program 4 times [2021-05-21 15:22:46,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:46,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163528061] [2021-05-21 15:22:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:46,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:46,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163528061] [2021-05-21 15:22:46,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163528061] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:46,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146874310] [2021-05-21 15:22:46,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:46,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:22:46,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:46,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-21 15:22:46,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:46,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146874310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:46,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:46,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-05-21 15:22:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074403699] [2021-05-21 15:22:46,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-21 15:22:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-21 15:22:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 15:22:46,654 INFO L87 Difference]: Start difference. First operand 754 states and 1450 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:46,796 INFO L93 Difference]: Finished difference Result 762 states and 1458 transitions. [2021-05-21 15:22:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 15:22:46,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 15:22:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:46,799 INFO L225 Difference]: With dead ends: 762 [2021-05-21 15:22:46,799 INFO L226 Difference]: Without dead ends: 762 [2021-05-21 15:22:46,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-05-21 15:22:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-05-21 15:22:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 759. [2021-05-21 15:22:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 756 states have (on average 1.9246031746031746) internal successors, (1455), 758 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1455 transitions. [2021-05-21 15:22:46,817 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1455 transitions. Word has length 57 [2021-05-21 15:22:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:46,817 INFO L482 AbstractCegarLoop]: Abstraction has 759 states and 1455 transitions. [2021-05-21 15:22:46,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1455 transitions. [2021-05-21 15:22:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-21 15:22:46,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:46,818 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2021-05-21 15:22:47,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:47,037 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:47,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1493481051, now seen corresponding path program 5 times [2021-05-21 15:22:47,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:47,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186616525] [2021-05-21 15:22:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:47,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:47,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186616525] [2021-05-21 15:22:47,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186616525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:47,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035164805] [2021-05-21 15:22:47,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:47,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-21 15:22:47,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:47,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-21 15:22:47,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:47,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035164805] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:47,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:47,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-05-21 15:22:47,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078509] [2021-05-21 15:22:47,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 15:22:47,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 15:22:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-05-21 15:22:47,377 INFO L87 Difference]: Start difference. First operand 759 states and 1455 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:47,532 INFO L93 Difference]: Finished difference Result 767 states and 1463 transitions. [2021-05-21 15:22:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 15:22:47,532 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-05-21 15:22:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:47,537 INFO L225 Difference]: With dead ends: 767 [2021-05-21 15:22:47,537 INFO L226 Difference]: Without dead ends: 767 [2021-05-21 15:22:47,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-05-21 15:22:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-05-21 15:22:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 764. [2021-05-21 15:22:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 761 states have (on average 1.9185282522996059) internal successors, (1460), 763 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1460 transitions. [2021-05-21 15:22:47,554 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1460 transitions. Word has length 62 [2021-05-21 15:22:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:47,554 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 1460 transitions. [2021-05-21 15:22:47,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1460 transitions. [2021-05-21 15:22:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-21 15:22:47,555 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:47,555 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2021-05-21 15:22:47,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-21 15:22:47,773 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1615576185, now seen corresponding path program 6 times [2021-05-21 15:22:47,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:47,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802022322] [2021-05-21 15:22:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:47,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:47,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802022322] [2021-05-21 15:22:47,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802022322] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:47,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039612499] [2021-05-21 15:22:47,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:48,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-21 15:22:48,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:48,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-21 15:22:48,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:48,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039612499] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:48,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:48,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-05-21 15:22:48,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089111115] [2021-05-21 15:22:48,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 15:22:48,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 15:22:48,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-05-21 15:22:48,181 INFO L87 Difference]: Start difference. First operand 764 states and 1460 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:48,397 INFO L93 Difference]: Finished difference Result 772 states and 1468 transitions. [2021-05-21 15:22:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 15:22:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-05-21 15:22:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:48,401 INFO L225 Difference]: With dead ends: 772 [2021-05-21 15:22:48,401 INFO L226 Difference]: Without dead ends: 772 [2021-05-21 15:22:48,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-05-21 15:22:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-05-21 15:22:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 769. [2021-05-21 15:22:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 766 states have (on average 1.912532637075718) internal successors, (1465), 768 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1465 transitions. [2021-05-21 15:22:48,420 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1465 transitions. Word has length 67 [2021-05-21 15:22:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:48,421 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 1465 transitions. [2021-05-21 15:22:48,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1465 transitions. [2021-05-21 15:22:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-21 15:22:48,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:48,422 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2021-05-21 15:22:48,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:48,625 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1034541339, now seen corresponding path program 7 times [2021-05-21 15:22:48,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:48,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309175216] [2021-05-21 15:22:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:48,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:48,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309175216] [2021-05-21 15:22:48,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309175216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:48,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373688408] [2021-05-21 15:22:48,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:48,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-21 15:22:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:48,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373688408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:48,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:48,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-05-21 15:22:48,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328091611] [2021-05-21 15:22:48,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 15:22:48,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:48,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 15:22:48,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-05-21 15:22:48,975 INFO L87 Difference]: Start difference. First operand 769 states and 1465 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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) [2021-05-21 15:22:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:49,207 INFO L93 Difference]: Finished difference Result 777 states and 1473 transitions. [2021-05-21 15:22:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-21 15:22:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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 [2021-05-21 15:22:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:49,210 INFO L225 Difference]: With dead ends: 777 [2021-05-21 15:22:49,210 INFO L226 Difference]: Without dead ends: 777 [2021-05-21 15:22:49,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 214.0ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-05-21 15:22:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-05-21 15:22:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 774. [2021-05-21 15:22:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 771 states have (on average 1.906614785992218) internal successors, (1470), 773 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1470 transitions. [2021-05-21 15:22:49,226 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1470 transitions. Word has length 72 [2021-05-21 15:22:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:49,226 INFO L482 AbstractCegarLoop]: Abstraction has 774 states and 1470 transitions. [2021-05-21 15:22:49,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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) [2021-05-21 15:22:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1470 transitions. [2021-05-21 15:22:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-21 15:22:49,227 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:49,227 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2021-05-21 15:22:49,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:49,451 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:49,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:49,451 INFO L82 PathProgramCache]: Analyzing trace with hash -416394823, now seen corresponding path program 8 times [2021-05-21 15:22:49,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:49,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764323762] [2021-05-21 15:22:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:49,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:49,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764323762] [2021-05-21 15:22:49,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764323762] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:49,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18647803] [2021-05-21 15:22:49,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:49,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:22:49,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:49,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-21 15:22:49,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:49,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18647803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:49,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:49,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-05-21 15:22:49,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067303537] [2021-05-21 15:22:49,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-21 15:22:49,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:49,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-21 15:22:49,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-05-21 15:22:49,828 INFO L87 Difference]: Start difference. First operand 774 states and 1470 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:50,095 INFO L93 Difference]: Finished difference Result 782 states and 1478 transitions. [2021-05-21 15:22:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 15:22:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-05-21 15:22:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:50,098 INFO L225 Difference]: With dead ends: 782 [2021-05-21 15:22:50,099 INFO L226 Difference]: Without dead ends: 782 [2021-05-21 15:22:50,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 269.2ms TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-05-21 15:22:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-05-21 15:22:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 779. [2021-05-21 15:22:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 776 states have (on average 1.9007731958762886) internal successors, (1475), 778 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1475 transitions. [2021-05-21 15:22:50,114 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1475 transitions. Word has length 77 [2021-05-21 15:22:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:50,114 INFO L482 AbstractCegarLoop]: Abstraction has 779 states and 1475 transitions. [2021-05-21 15:22:50,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1475 transitions. [2021-05-21 15:22:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-21 15:22:50,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:50,115 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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] [2021-05-21 15:22:50,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-21 15:22:50,338 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:50,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1666354139, now seen corresponding path program 9 times [2021-05-21 15:22:50,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:50,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866234406] [2021-05-21 15:22:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:50,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:50,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866234406] [2021-05-21 15:22:50,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866234406] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:50,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054511178] [2021-05-21 15:22:50,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:50,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-21 15:22:50,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:50,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-21 15:22:50,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:50,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054511178] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:50,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:50,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-05-21 15:22:50,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303239854] [2021-05-21 15:22:50,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-21 15:22:50,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:50,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-21 15:22:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-05-21 15:22:50,886 INFO L87 Difference]: Start difference. First operand 779 states and 1475 transitions. Second operand has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:51,180 INFO L93 Difference]: Finished difference Result 787 states and 1483 transitions. [2021-05-21 15:22:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 15:22:51,180 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-05-21 15:22:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:51,183 INFO L225 Difference]: With dead ends: 787 [2021-05-21 15:22:51,183 INFO L226 Difference]: Without dead ends: 787 [2021-05-21 15:22:51,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 321.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 15:22:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-05-21 15:22:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 784. [2021-05-21 15:22:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 781 states have (on average 1.8950064020486557) internal successors, (1480), 783 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1480 transitions. [2021-05-21 15:22:51,198 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1480 transitions. Word has length 82 [2021-05-21 15:22:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:51,198 INFO L482 AbstractCegarLoop]: Abstraction has 784 states and 1480 transitions. [2021-05-21 15:22:51,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1480 transitions. [2021-05-21 15:22:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-21 15:22:51,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:51,199 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2021-05-21 15:22:51,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:51,423 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:51,423 INFO L82 PathProgramCache]: Analyzing trace with hash 281499385, now seen corresponding path program 10 times [2021-05-21 15:22:51,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:51,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115545341] [2021-05-21 15:22:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:51,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:51,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115545341] [2021-05-21 15:22:51,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115545341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:51,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764510929] [2021-05-21 15:22:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:51,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:22:51,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:51,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-21 15:22:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:51,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764510929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:51,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:51,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-05-21 15:22:51,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114039294] [2021-05-21 15:22:51,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 15:22:51,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 15:22:51,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-05-21 15:22:51,882 INFO L87 Difference]: Start difference. First operand 784 states and 1480 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:52,256 INFO L93 Difference]: Finished difference Result 792 states and 1488 transitions. [2021-05-21 15:22:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 15:22:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-05-21 15:22:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:52,260 INFO L225 Difference]: With dead ends: 792 [2021-05-21 15:22:52,260 INFO L226 Difference]: Without dead ends: 792 [2021-05-21 15:22:52,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 15:22:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-05-21 15:22:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 789. [2021-05-21 15:22:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 786 states have (on average 1.8893129770992367) internal successors, (1485), 788 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1485 transitions. [2021-05-21 15:22:52,276 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1485 transitions. Word has length 87 [2021-05-21 15:22:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:52,276 INFO L482 AbstractCegarLoop]: Abstraction has 789 states and 1485 transitions. [2021-05-21 15:22:52,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1485 transitions. [2021-05-21 15:22:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-21 15:22:52,277 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:52,277 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2021-05-21 15:22:52,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:52,493 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1187696283, now seen corresponding path program 11 times [2021-05-21 15:22:52,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:52,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954955860] [2021-05-21 15:22:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:52,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:52,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954955860] [2021-05-21 15:22:52,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954955860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:52,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210931418] [2021-05-21 15:22:52,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:52,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-21 15:22:52,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:52,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-21 15:22:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:52,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210931418] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:52,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:52,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-05-21 15:22:52,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285737215] [2021-05-21 15:22:52,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-21 15:22:52,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:52,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-21 15:22:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-05-21 15:22:52,994 INFO L87 Difference]: Start difference. First operand 789 states and 1485 transitions. Second operand has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:53,449 INFO L93 Difference]: Finished difference Result 797 states and 1493 transitions. [2021-05-21 15:22:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 15:22:53,450 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-05-21 15:22:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:53,452 INFO L225 Difference]: With dead ends: 797 [2021-05-21 15:22:53,452 INFO L226 Difference]: Without dead ends: 797 [2021-05-21 15:22:53,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 520.4ms TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 15:22:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-05-21 15:22:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 794. [2021-05-21 15:22:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 791 states have (on average 1.883691529709229) internal successors, (1490), 793 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1490 transitions. [2021-05-21 15:22:53,466 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1490 transitions. Word has length 92 [2021-05-21 15:22:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:53,466 INFO L482 AbstractCegarLoop]: Abstraction has 794 states and 1490 transitions. [2021-05-21 15:22:53,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1490 transitions. [2021-05-21 15:22:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-21 15:22:53,467 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:53,467 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2021-05-21 15:22:53,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-21 15:22:53,690 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2143996985, now seen corresponding path program 12 times [2021-05-21 15:22:53,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:53,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637520021] [2021-05-21 15:22:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:53,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:53,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637520021] [2021-05-21 15:22:53,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637520021] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:53,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405057336] [2021-05-21 15:22:53,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:54,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-21 15:22:54,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:54,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-21 15:22:54,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:54,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405057336] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:54,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:54,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-05-21 15:22:54,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377337262] [2021-05-21 15:22:54,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-21 15:22:54,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-21 15:22:54,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-05-21 15:22:54,310 INFO L87 Difference]: Start difference. First operand 794 states and 1490 transitions. Second operand has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:54,715 INFO L93 Difference]: Finished difference Result 802 states and 1498 transitions. [2021-05-21 15:22:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 15:22:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-05-21 15:22:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:54,718 INFO L225 Difference]: With dead ends: 802 [2021-05-21 15:22:54,718 INFO L226 Difference]: Without dead ends: 802 [2021-05-21 15:22:54,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 507.0ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 15:22:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-05-21 15:22:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 799. [2021-05-21 15:22:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 796 states have (on average 1.8781407035175879) internal successors, (1495), 798 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1495 transitions. [2021-05-21 15:22:54,732 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1495 transitions. Word has length 97 [2021-05-21 15:22:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:54,733 INFO L482 AbstractCegarLoop]: Abstraction has 799 states and 1495 transitions. [2021-05-21 15:22:54,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1495 transitions. [2021-05-21 15:22:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-05-21 15:22:54,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:54,734 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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] [2021-05-21 15:22:54,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-21 15:22:54,954 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash -706829989, now seen corresponding path program 13 times [2021-05-21 15:22:54,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:54,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791023614] [2021-05-21 15:22:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:55,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:55,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791023614] [2021-05-21 15:22:55,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791023614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:55,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627731857] [2021-05-21 15:22:55,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:55,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-21 15:22:55,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:55,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627731857] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:55,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:55,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-05-21 15:22:55,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142778719] [2021-05-21 15:22:55,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-21 15:22:55,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-21 15:22:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-05-21 15:22:55,482 INFO L87 Difference]: Start difference. First operand 799 states and 1495 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:55,952 INFO L93 Difference]: Finished difference Result 807 states and 1503 transitions. [2021-05-21 15:22:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 15:22:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-05-21 15:22:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:55,955 INFO L225 Difference]: With dead ends: 807 [2021-05-21 15:22:55,955 INFO L226 Difference]: Without dead ends: 807 [2021-05-21 15:22:55,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 583.4ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 15:22:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-05-21 15:22:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 804. [2021-05-21 15:22:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 801 states have (on average 1.8726591760299625) internal successors, (1500), 803 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1500 transitions. [2021-05-21 15:22:55,969 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1500 transitions. Word has length 102 [2021-05-21 15:22:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:55,970 INFO L482 AbstractCegarLoop]: Abstraction has 804 states and 1500 transitions. [2021-05-21 15:22:55,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1500 transitions. [2021-05-21 15:22:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-21 15:22:55,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:55,971 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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] [2021-05-21 15:22:56,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-21 15:22:56,193 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash 99398009, now seen corresponding path program 14 times [2021-05-21 15:22:56,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:56,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660646363] [2021-05-21 15:22:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:56,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:56,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660646363] [2021-05-21 15:22:56,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660646363] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:56,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963783177] [2021-05-21 15:22:56,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:56,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:22:56,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-21 15:22:56,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:56,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963783177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:56,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:56,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-05-21 15:22:56,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861872834] [2021-05-21 15:22:56,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-21 15:22:56,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:56,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-21 15:22:56,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-05-21 15:22:56,782 INFO L87 Difference]: Start difference. First operand 804 states and 1500 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:57,311 INFO L93 Difference]: Finished difference Result 812 states and 1508 transitions. [2021-05-21 15:22:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 15:22:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-05-21 15:22:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:57,314 INFO L225 Difference]: With dead ends: 812 [2021-05-21 15:22:57,314 INFO L226 Difference]: Without dead ends: 812 [2021-05-21 15:22:57,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 721.7ms TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 15:22:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-05-21 15:22:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 809. [2021-05-21 15:22:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 806 states have (on average 1.8672456575682381) internal successors, (1505), 808 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1505 transitions. [2021-05-21 15:22:57,328 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1505 transitions. Word has length 107 [2021-05-21 15:22:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:57,328 INFO L482 AbstractCegarLoop]: Abstraction has 809 states and 1505 transitions. [2021-05-21 15:22:57,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1505 transitions. [2021-05-21 15:22:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-05-21 15:22:57,329 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:57,330 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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] [2021-05-21 15:22:57,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:57,537 INFO L430 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:57,537 INFO L82 PathProgramCache]: Analyzing trace with hash 794428443, now seen corresponding path program 15 times [2021-05-21 15:22:57,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:57,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475498506] [2021-05-21 15:22:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:57,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:57,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475498506] [2021-05-21 15:22:57,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475498506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:57,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248850248] [2021-05-21 15:22:57,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:58,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-21 15:22:58,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:58,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-21 15:22:58,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:22:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:58,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248850248] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:58,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:22:58,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-05-21 15:22:58,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867558490] [2021-05-21 15:22:58,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-21 15:22:58,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:22:58,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-21 15:22:58,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 15:22:58,569 INFO L87 Difference]: Start difference. First operand 809 states and 1505 transitions. Second operand has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:22:59,173 INFO L93 Difference]: Finished difference Result 817 states and 1513 transitions. [2021-05-21 15:22:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 15:22:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-05-21 15:22:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:22:59,176 INFO L225 Difference]: With dead ends: 817 [2021-05-21 15:22:59,176 INFO L226 Difference]: Without dead ends: 817 [2021-05-21 15:22:59,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 780.5ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 15:22:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-05-21 15:22:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 814. [2021-05-21 15:22:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 811 states have (on average 1.8618988902589395) internal successors, (1510), 813 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1510 transitions. [2021-05-21 15:22:59,190 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1510 transitions. Word has length 112 [2021-05-21 15:22:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:22:59,190 INFO L482 AbstractCegarLoop]: Abstraction has 814 states and 1510 transitions. [2021-05-21 15:22:59,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:22:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1510 transitions. [2021-05-21 15:22:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-21 15:22:59,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:22:59,191 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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] [2021-05-21 15:22:59,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-21 15:22:59,414 INFO L430 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:22:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:22:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash -471791943, now seen corresponding path program 16 times [2021-05-21 15:22:59,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:22:59,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645485785] [2021-05-21 15:22:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:22:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:22:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:22:59,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:22:59,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645485785] [2021-05-21 15:22:59,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645485785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:22:59,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140808270] [2021-05-21 15:22:59,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:22:59,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:22:59,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:22:59,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-21 15:22:59,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:00,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140808270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:00,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:00,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-05-21 15:23:00,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840888622] [2021-05-21 15:23:00,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-21 15:23:00,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-21 15:23:00,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-05-21 15:23:00,087 INFO L87 Difference]: Start difference. First operand 814 states and 1510 transitions. Second operand has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:00,681 INFO L93 Difference]: Finished difference Result 822 states and 1518 transitions. [2021-05-21 15:23:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 15:23:00,682 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-05-21 15:23:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:00,684 INFO L225 Difference]: With dead ends: 822 [2021-05-21 15:23:00,684 INFO L226 Difference]: Without dead ends: 822 [2021-05-21 15:23:00,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 826.3ms TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 15:23:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-05-21 15:23:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 819. [2021-05-21 15:23:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 816 states have (on average 1.8566176470588236) internal successors, (1515), 818 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1515 transitions. [2021-05-21 15:23:00,697 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1515 transitions. Word has length 117 [2021-05-21 15:23:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:00,697 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 1515 transitions. [2021-05-21 15:23:00,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1515 transitions. [2021-05-21 15:23:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-21 15:23:00,698 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:00,698 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 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] [2021-05-21 15:23:00,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-21 15:23:00,920 INFO L430 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:00,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1661531867, now seen corresponding path program 17 times [2021-05-21 15:23:00,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:00,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101696220] [2021-05-21 15:23:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:01,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:01,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101696220] [2021-05-21 15:23:01,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101696220] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:01,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455319503] [2021-05-21 15:23:01,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:01,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-21 15:23:01,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:01,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-21 15:23:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:01,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455319503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:01,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:01,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-05-21 15:23:01,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177832225] [2021-05-21 15:23:01,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-21 15:23:01,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-21 15:23:01,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 15:23:01,714 INFO L87 Difference]: Start difference. First operand 819 states and 1515 transitions. Second operand has 39 states, 39 states have (on average 3.128205128205128) internal successors, (122), 39 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) [2021-05-21 15:23:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:02,352 INFO L93 Difference]: Finished difference Result 827 states and 1523 transitions. [2021-05-21 15:23:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 15:23:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.128205128205128) internal successors, (122), 39 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 122 [2021-05-21 15:23:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:02,355 INFO L225 Difference]: With dead ends: 827 [2021-05-21 15:23:02,355 INFO L226 Difference]: Without dead ends: 827 [2021-05-21 15:23:02,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 15:23:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-05-21 15:23:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 824. [2021-05-21 15:23:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 821 states have (on average 1.851400730816078) internal successors, (1520), 823 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1520 transitions. [2021-05-21 15:23:02,394 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1520 transitions. Word has length 122 [2021-05-21 15:23:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:02,394 INFO L482 AbstractCegarLoop]: Abstraction has 824 states and 1520 transitions. [2021-05-21 15:23:02,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.128205128205128) internal successors, (122), 39 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) [2021-05-21 15:23:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1520 transitions. [2021-05-21 15:23:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-21 15:23:02,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:02,395 INFO L521 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 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] [2021-05-21 15:23:02,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:02,596 INFO L430 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash 157010937, now seen corresponding path program 18 times [2021-05-21 15:23:02,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:02,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526581464] [2021-05-21 15:23:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:02,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:02,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526581464] [2021-05-21 15:23:02,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526581464] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:02,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619528059] [2021-05-21 15:23:02,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:04,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-21 15:23:04,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:04,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-21 15:23:04,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:04,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619528059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:04,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:04,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-05-21 15:23:04,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881910479] [2021-05-21 15:23:04,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-21 15:23:04,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:04,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-21 15:23:04,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 15:23:04,711 INFO L87 Difference]: Start difference. First operand 824 states and 1520 transitions. Second operand has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:05,422 INFO L93 Difference]: Finished difference Result 832 states and 1528 transitions. [2021-05-21 15:23:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 15:23:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-05-21 15:23:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:05,425 INFO L225 Difference]: With dead ends: 832 [2021-05-21 15:23:05,425 INFO L226 Difference]: Without dead ends: 832 [2021-05-21 15:23:05,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 895.7ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 15:23:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-05-21 15:23:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 829. [2021-05-21 15:23:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 826 states have (on average 1.8462469733656175) internal successors, (1525), 828 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1525 transitions. [2021-05-21 15:23:05,437 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1525 transitions. Word has length 127 [2021-05-21 15:23:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:05,437 INFO L482 AbstractCegarLoop]: Abstraction has 829 states and 1525 transitions. [2021-05-21 15:23:05,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1525 transitions. [2021-05-21 15:23:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-05-21 15:23:05,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:05,439 INFO L521 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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] [2021-05-21 15:23:05,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:05,653 INFO L430 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash 834107803, now seen corresponding path program 19 times [2021-05-21 15:23:05,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:05,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966259099] [2021-05-21 15:23:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:06,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:06,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966259099] [2021-05-21 15:23:06,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966259099] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:06,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168180456] [2021-05-21 15:23:06,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:06,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-21 15:23:06,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:06,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168180456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:06,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:06,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-05-21 15:23:06,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138788546] [2021-05-21 15:23:06,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-21 15:23:06,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:06,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-21 15:23:06,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 15:23:06,367 INFO L87 Difference]: Start difference. First operand 829 states and 1525 transitions. Second operand has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:07,138 INFO L93 Difference]: Finished difference Result 837 states and 1533 transitions. [2021-05-21 15:23:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 15:23:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-05-21 15:23:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:07,149 INFO L225 Difference]: With dead ends: 837 [2021-05-21 15:23:07,149 INFO L226 Difference]: Without dead ends: 837 [2021-05-21 15:23:07,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1005.3ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-05-21 15:23:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-05-21 15:23:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 834. [2021-05-21 15:23:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 831 states have (on average 1.8411552346570397) internal successors, (1530), 833 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1530 transitions. [2021-05-21 15:23:07,160 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1530 transitions. Word has length 132 [2021-05-21 15:23:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:07,160 INFO L482 AbstractCegarLoop]: Abstraction has 834 states and 1530 transitions. [2021-05-21 15:23:07,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1530 transitions. [2021-05-21 15:23:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-21 15:23:07,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:07,161 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 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] [2021-05-21 15:23:07,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:07,384 INFO L430 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:07,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1427177785, now seen corresponding path program 20 times [2021-05-21 15:23:07,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:07,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207341976] [2021-05-21 15:23:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:07,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:07,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207341976] [2021-05-21 15:23:07,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207341976] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:07,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552403513] [2021-05-21 15:23:07,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:08,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:23:08,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:08,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-21 15:23:08,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:08,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552403513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:08,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:08,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-05-21 15:23:08,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021891258] [2021-05-21 15:23:08,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-21 15:23:08,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:08,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-21 15:23:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 15:23:08,274 INFO L87 Difference]: Start difference. First operand 834 states and 1530 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:09,100 INFO L93 Difference]: Finished difference Result 842 states and 1538 transitions. [2021-05-21 15:23:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-21 15:23:09,100 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-05-21 15:23:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:09,102 INFO L225 Difference]: With dead ends: 842 [2021-05-21 15:23:09,102 INFO L226 Difference]: Without dead ends: 842 [2021-05-21 15:23:09,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1162.7ms TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2021-05-21 15:23:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-05-21 15:23:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 839. [2021-05-21 15:23:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 836 states have (on average 1.8361244019138756) internal successors, (1535), 838 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1535 transitions. [2021-05-21 15:23:09,114 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1535 transitions. Word has length 137 [2021-05-21 15:23:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:09,115 INFO L482 AbstractCegarLoop]: Abstraction has 839 states and 1535 transitions. [2021-05-21 15:23:09,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1535 transitions. [2021-05-21 15:23:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-05-21 15:23:09,116 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:09,116 INFO L521 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 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] [2021-05-21 15:23:09,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-21 15:23:09,337 INFO L430 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash -852390821, now seen corresponding path program 21 times [2021-05-21 15:23:09,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:09,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142292186] [2021-05-21 15:23:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:09,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:09,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142292186] [2021-05-21 15:23:09,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142292186] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:09,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338534215] [2021-05-21 15:23:09,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:10,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-21 15:23:10,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:10,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-21 15:23:10,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:10,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338534215] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:10,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:10,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-05-21 15:23:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469800968] [2021-05-21 15:23:10,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-21 15:23:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-21 15:23:10,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 15:23:10,773 INFO L87 Difference]: Start difference. First operand 839 states and 1535 transitions. Second operand has 47 states, 47 states have (on average 3.021276595744681) internal successors, (142), 47 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:11,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:11,649 INFO L93 Difference]: Finished difference Result 847 states and 1543 transitions. [2021-05-21 15:23:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 15:23:11,649 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.021276595744681) internal successors, (142), 47 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-05-21 15:23:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:11,652 INFO L225 Difference]: With dead ends: 847 [2021-05-21 15:23:11,652 INFO L226 Difference]: Without dead ends: 847 [2021-05-21 15:23:11,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1204.1ms TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2021-05-21 15:23:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-05-21 15:23:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2021-05-21 15:23:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 1.83115338882283) internal successors, (1540), 843 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1540 transitions. [2021-05-21 15:23:11,662 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1540 transitions. Word has length 142 [2021-05-21 15:23:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:11,663 INFO L482 AbstractCegarLoop]: Abstraction has 844 states and 1540 transitions. [2021-05-21 15:23:11,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 3.021276595744681) internal successors, (142), 47 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1540 transitions. [2021-05-21 15:23:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-21 15:23:11,664 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:11,664 INFO L521 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 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] [2021-05-21 15:23:11,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-21 15:23:11,885 INFO L430 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:11,885 INFO L82 PathProgramCache]: Analyzing trace with hash -726358407, now seen corresponding path program 22 times [2021-05-21 15:23:11,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:11,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100563248] [2021-05-21 15:23:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:12,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:12,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100563248] [2021-05-21 15:23:12,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100563248] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:12,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901287853] [2021-05-21 15:23:12,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:12,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:23:12,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:12,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-21 15:23:12,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:12,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901287853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:12,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:12,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-05-21 15:23:12,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155481536] [2021-05-21 15:23:12,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-21 15:23:12,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:12,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-21 15:23:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 15:23:12,779 INFO L87 Difference]: Start difference. First operand 844 states and 1540 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:13,798 INFO L93 Difference]: Finished difference Result 852 states and 1548 transitions. [2021-05-21 15:23:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-21 15:23:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-05-21 15:23:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:13,801 INFO L225 Difference]: With dead ends: 852 [2021-05-21 15:23:13,801 INFO L226 Difference]: Without dead ends: 852 [2021-05-21 15:23:13,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1352.4ms TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2021-05-21 15:23:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-05-21 15:23:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 849. [2021-05-21 15:23:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 846 states have (on average 1.826241134751773) internal successors, (1545), 848 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1545 transitions. [2021-05-21 15:23:13,810 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1545 transitions. Word has length 147 [2021-05-21 15:23:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:13,810 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 1545 transitions. [2021-05-21 15:23:13,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1545 transitions. [2021-05-21 15:23:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-05-21 15:23:13,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:13,811 INFO L521 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 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] [2021-05-21 15:23:14,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:14,025 INFO L430 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1740427493, now seen corresponding path program 23 times [2021-05-21 15:23:14,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:14,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465286932] [2021-05-21 15:23:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:14,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:14,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465286932] [2021-05-21 15:23:14,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465286932] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:14,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869135757] [2021-05-21 15:23:14,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:15,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-21 15:23:15,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:15,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-21 15:23:15,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:15,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869135757] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:15,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:15,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-05-21 15:23:15,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901745350] [2021-05-21 15:23:15,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-21 15:23:15,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-21 15:23:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 15:23:15,571 INFO L87 Difference]: Start difference. First operand 849 states and 1545 transitions. Second operand has 51 states, 51 states have (on average 2.980392156862745) internal successors, (152), 51 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:16,746 INFO L93 Difference]: Finished difference Result 857 states and 1553 transitions. [2021-05-21 15:23:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-21 15:23:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.980392156862745) internal successors, (152), 51 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-05-21 15:23:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:16,759 INFO L225 Difference]: With dead ends: 857 [2021-05-21 15:23:16,759 INFO L226 Difference]: Without dead ends: 857 [2021-05-21 15:23:16,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1514.3ms TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2021-05-21 15:23:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-05-21 15:23:16,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 854. [2021-05-21 15:23:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 851 states have (on average 1.8213866039952997) internal successors, (1550), 853 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1550 transitions. [2021-05-21 15:23:16,770 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1550 transitions. Word has length 152 [2021-05-21 15:23:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:16,770 INFO L482 AbstractCegarLoop]: Abstraction has 854 states and 1550 transitions. [2021-05-21 15:23:16,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.980392156862745) internal successors, (152), 51 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1550 transitions. [2021-05-21 15:23:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-21 15:23:16,771 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:16,771 INFO L521 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 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] [2021-05-21 15:23:16,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-21 15:23:16,995 INFO L430 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 83540921, now seen corresponding path program 24 times [2021-05-21 15:23:16,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:16,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958632102] [2021-05-21 15:23:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:17,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:17,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958632102] [2021-05-21 15:23:17,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958632102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:17,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330170709] [2021-05-21 15:23:17,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:23,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-21 15:23:23,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:23,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-21 15:23:23,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:23,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330170709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:23,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:23,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-05-21 15:23:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556446078] [2021-05-21 15:23:23,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-21 15:23:23,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-21 15:23:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 15:23:23,254 INFO L87 Difference]: Start difference. First operand 854 states and 1550 transitions. Second operand has 53 states, 53 states have (on average 2.9622641509433962) internal successors, (157), 53 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:24,343 INFO L93 Difference]: Finished difference Result 862 states and 1558 transitions. [2021-05-21 15:23:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-21 15:23:24,343 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.9622641509433962) internal successors, (157), 53 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-05-21 15:23:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:24,356 INFO L225 Difference]: With dead ends: 862 [2021-05-21 15:23:24,356 INFO L226 Difference]: Without dead ends: 862 [2021-05-21 15:23:24,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1487.6ms TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2021-05-21 15:23:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-05-21 15:23:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 859. [2021-05-21 15:23:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 856 states have (on average 1.816588785046729) internal successors, (1555), 858 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1555 transitions. [2021-05-21 15:23:24,367 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1555 transitions. Word has length 157 [2021-05-21 15:23:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:24,367 INFO L482 AbstractCegarLoop]: Abstraction has 859 states and 1555 transitions. [2021-05-21 15:23:24,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.9622641509433962) internal successors, (157), 53 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1555 transitions. [2021-05-21 15:23:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-05-21 15:23:24,368 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:24,368 INFO L521 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 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] [2021-05-21 15:23:24,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:24,577 INFO L430 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -424123941, now seen corresponding path program 25 times [2021-05-21 15:23:24,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:24,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649076424] [2021-05-21 15:23:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:25,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649076424] [2021-05-21 15:23:25,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649076424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254786228] [2021-05-21 15:23:25,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:25,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-21 15:23:25,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:25,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254786228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:25,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:25,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-05-21 15:23:25,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680079641] [2021-05-21 15:23:25,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-21 15:23:25,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:25,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-21 15:23:25,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 15:23:25,622 INFO L87 Difference]: Start difference. First operand 859 states and 1555 transitions. Second operand has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:26,775 INFO L93 Difference]: Finished difference Result 867 states and 1563 transitions. [2021-05-21 15:23:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-21 15:23:26,775 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-05-21 15:23:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:26,777 INFO L225 Difference]: With dead ends: 867 [2021-05-21 15:23:26,777 INFO L226 Difference]: Without dead ends: 867 [2021-05-21 15:23:26,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1658.1ms TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2021-05-21 15:23:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-05-21 15:23:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2021-05-21 15:23:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 861 states have (on average 1.8118466898954704) internal successors, (1560), 863 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1560 transitions. [2021-05-21 15:23:26,787 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1560 transitions. Word has length 162 [2021-05-21 15:23:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:26,787 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 1560 transitions. [2021-05-21 15:23:26,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1560 transitions. [2021-05-21 15:23:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-21 15:23:26,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:26,788 INFO L521 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 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] [2021-05-21 15:23:27,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-21 15:23:27,005 INFO L430 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash 295125241, now seen corresponding path program 26 times [2021-05-21 15:23:27,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:27,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50689085] [2021-05-21 15:23:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:27,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:27,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50689085] [2021-05-21 15:23:27,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50689085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:27,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543750593] [2021-05-21 15:23:27,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:27,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:23:27,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-21 15:23:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:28,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543750593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:28,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:28,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-05-21 15:23:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970063402] [2021-05-21 15:23:28,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-21 15:23:28,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-21 15:23:28,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 15:23:28,141 INFO L87 Difference]: Start difference. First operand 864 states and 1560 transitions. Second operand has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:29,379 INFO L93 Difference]: Finished difference Result 872 states and 1568 transitions. [2021-05-21 15:23:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-21 15:23:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-05-21 15:23:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:29,381 INFO L225 Difference]: With dead ends: 872 [2021-05-21 15:23:29,381 INFO L226 Difference]: Without dead ends: 872 [2021-05-21 15:23:29,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1772.4ms TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2021-05-21 15:23:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-05-21 15:23:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 869. [2021-05-21 15:23:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 866 states have (on average 1.8071593533487298) internal successors, (1565), 868 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1565 transitions. [2021-05-21 15:23:29,389 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1565 transitions. Word has length 167 [2021-05-21 15:23:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:29,389 INFO L482 AbstractCegarLoop]: Abstraction has 869 states and 1565 transitions. [2021-05-21 15:23:29,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 57 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1565 transitions. [2021-05-21 15:23:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-05-21 15:23:29,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:29,390 INFO L521 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 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] [2021-05-21 15:23:29,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-21 15:23:29,593 INFO L430 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1117969253, now seen corresponding path program 27 times [2021-05-21 15:23:29,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:29,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286766904] [2021-05-21 15:23:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:30,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:30,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286766904] [2021-05-21 15:23:30,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286766904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:30,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803055184] [2021-05-21 15:23:30,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:33,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-21 15:23:33,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:33,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-21 15:23:33,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:33,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803055184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:33,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:33,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-05-21 15:23:33,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109430205] [2021-05-21 15:23:33,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-21 15:23:33,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:33,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-21 15:23:33,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 15:23:33,581 INFO L87 Difference]: Start difference. First operand 869 states and 1565 transitions. Second operand has 59 states, 59 states have (on average 2.9152542372881354) internal successors, (172), 59 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:34,875 INFO L93 Difference]: Finished difference Result 877 states and 1573 transitions. [2021-05-21 15:23:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-21 15:23:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.9152542372881354) internal successors, (172), 59 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-05-21 15:23:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:34,876 INFO L225 Difference]: With dead ends: 877 [2021-05-21 15:23:34,876 INFO L226 Difference]: Without dead ends: 877 [2021-05-21 15:23:34,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 1815.0ms TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2021-05-21 15:23:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-05-21 15:23:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 874. [2021-05-21 15:23:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 871 states have (on average 1.8025258323765787) internal successors, (1570), 873 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1570 transitions. [2021-05-21 15:23:34,885 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1570 transitions. Word has length 172 [2021-05-21 15:23:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:34,885 INFO L482 AbstractCegarLoop]: Abstraction has 874 states and 1570 transitions. [2021-05-21 15:23:34,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.9152542372881354) internal successors, (172), 59 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1570 transitions. [2021-05-21 15:23:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-21 15:23:34,886 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:34,886 INFO L521 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 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] [2021-05-21 15:23:35,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-21 15:23:35,101 INFO L430 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash 356398649, now seen corresponding path program 28 times [2021-05-21 15:23:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:35,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272876325] [2021-05-21 15:23:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:36,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:36,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272876325] [2021-05-21 15:23:36,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272876325] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:36,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127258449] [2021-05-21 15:23:36,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:36,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:23:36,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:36,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-21 15:23:36,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:36,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127258449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:36,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:36,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-05-21 15:23:36,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719917310] [2021-05-21 15:23:36,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-21 15:23:36,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-21 15:23:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 15:23:36,403 INFO L87 Difference]: Start difference. First operand 874 states and 1570 transitions. Second operand has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:37,730 INFO L93 Difference]: Finished difference Result 882 states and 1578 transitions. [2021-05-21 15:23:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-21 15:23:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-05-21 15:23:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:37,732 INFO L225 Difference]: With dead ends: 882 [2021-05-21 15:23:37,732 INFO L226 Difference]: Without dead ends: 882 [2021-05-21 15:23:37,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 2039.0ms TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2021-05-21 15:23:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-05-21 15:23:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 879. [2021-05-21 15:23:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 876 states have (on average 1.797945205479452) internal successors, (1575), 878 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1575 transitions. [2021-05-21 15:23:37,740 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1575 transitions. Word has length 177 [2021-05-21 15:23:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:37,740 INFO L482 AbstractCegarLoop]: Abstraction has 879 states and 1575 transitions. [2021-05-21 15:23:37,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1575 transitions. [2021-05-21 15:23:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-05-21 15:23:37,741 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:37,741 INFO L521 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 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] [2021-05-21 15:23:37,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:37,963 INFO L430 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:37,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1845659813, now seen corresponding path program 29 times [2021-05-21 15:23:37,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:37,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221174895] [2021-05-21 15:23:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:38,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:38,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221174895] [2021-05-21 15:23:38,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221174895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:38,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139304104] [2021-05-21 15:23:38,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:23:42,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-21 15:23:42,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:23:42,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-21 15:23:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:23:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:42,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139304104] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:42,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:23:42,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-05-21 15:23:42,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371401384] [2021-05-21 15:23:42,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-21 15:23:42,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:23:42,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-21 15:23:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 15:23:42,890 INFO L87 Difference]: Start difference. First operand 879 states and 1575 transitions. Second operand has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 63 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:23:44,324 INFO L93 Difference]: Finished difference Result 887 states and 1583 transitions. [2021-05-21 15:23:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-21 15:23:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 63 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-05-21 15:23:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:23:44,325 INFO L225 Difference]: With dead ends: 887 [2021-05-21 15:23:44,325 INFO L226 Difference]: Without dead ends: 887 [2021-05-21 15:23:44,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 2112.9ms TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2021-05-21 15:23:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-05-21 15:23:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 884. [2021-05-21 15:23:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 881 states have (on average 1.793416572077185) internal successors, (1580), 883 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1580 transitions. [2021-05-21 15:23:44,334 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1580 transitions. Word has length 182 [2021-05-21 15:23:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:23:44,334 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 1580 transitions. [2021-05-21 15:23:44,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 63 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:23:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1580 transitions. [2021-05-21 15:23:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-21 15:23:44,335 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:23:44,335 INFO L521 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 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] [2021-05-21 15:23:44,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-21 15:23:44,537 INFO L430 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:23:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:23:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1503894393, now seen corresponding path program 30 times [2021-05-21 15:23:44,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:23:44,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902686827] [2021-05-21 15:23:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:23:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:23:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:23:45,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:23:45,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902686827] [2021-05-21 15:23:45,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902686827] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:23:45,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925727968] [2021-05-21 15:23:45,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:02,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-21 15:24:02,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:24:02,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-21 15:24:02,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:03,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925727968] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:03,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:03,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-05-21 15:24:03,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013556298] [2021-05-21 15:24:03,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-21 15:24:03,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:03,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-21 15:24:03,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 15:24:03,250 INFO L87 Difference]: Start difference. First operand 884 states and 1580 transitions. Second operand has 65 states, 65 states have (on average 2.876923076923077) internal successors, (187), 65 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:04,877 INFO L93 Difference]: Finished difference Result 892 states and 1588 transitions. [2021-05-21 15:24:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-21 15:24:04,877 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.876923076923077) internal successors, (187), 65 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2021-05-21 15:24:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:04,878 INFO L225 Difference]: With dead ends: 892 [2021-05-21 15:24:04,878 INFO L226 Difference]: Without dead ends: 892 [2021-05-21 15:24:04,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 2263.4ms TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2021-05-21 15:24:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-05-21 15:24:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 889. [2021-05-21 15:24:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 886 states have (on average 1.7889390519187358) internal successors, (1585), 888 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1585 transitions. [2021-05-21 15:24:04,888 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1585 transitions. Word has length 187 [2021-05-21 15:24:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:04,889 INFO L482 AbstractCegarLoop]: Abstraction has 889 states and 1585 transitions. [2021-05-21 15:24:04,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.876923076923077) internal successors, (187), 65 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1585 transitions. [2021-05-21 15:24:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-05-21 15:24:04,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:04,890 INFO L521 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 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] [2021-05-21 15:24:05,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:05,093 INFO L430 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash 191191579, now seen corresponding path program 31 times [2021-05-21 15:24:05,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:05,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657462700] [2021-05-21 15:24:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:06,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:06,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657462700] [2021-05-21 15:24:06,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657462700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:06,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203565337] [2021-05-21 15:24:06,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:06,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-21 15:24:06,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:06,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203565337] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:06,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:06,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-05-21 15:24:06,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695264829] [2021-05-21 15:24:06,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-21 15:24:06,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:06,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-21 15:24:06,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 15:24:06,511 INFO L87 Difference]: Start difference. First operand 889 states and 1585 transitions. Second operand has 67 states, 67 states have (on average 2.8656716417910446) internal successors, (192), 67 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:08,164 INFO L93 Difference]: Finished difference Result 897 states and 1593 transitions. [2021-05-21 15:24:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-21 15:24:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8656716417910446) internal successors, (192), 67 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-05-21 15:24:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:08,166 INFO L225 Difference]: With dead ends: 897 [2021-05-21 15:24:08,166 INFO L226 Difference]: Without dead ends: 897 [2021-05-21 15:24:08,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 2455.6ms TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2021-05-21 15:24:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-05-21 15:24:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 894. [2021-05-21 15:24:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 891 states have (on average 1.7845117845117846) internal successors, (1590), 893 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1590 transitions. [2021-05-21 15:24:08,179 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1590 transitions. Word has length 192 [2021-05-21 15:24:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:08,179 INFO L482 AbstractCegarLoop]: Abstraction has 894 states and 1590 transitions. [2021-05-21 15:24:08,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.8656716417910446) internal successors, (192), 67 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1590 transitions. [2021-05-21 15:24:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-21 15:24:08,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:08,180 INFO L521 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 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] [2021-05-21 15:24:08,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-21 15:24:08,397 INFO L430 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1753517895, now seen corresponding path program 32 times [2021-05-21 15:24:08,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:08,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530578068] [2021-05-21 15:24:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2518 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:09,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:09,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530578068] [2021-05-21 15:24:09,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530578068] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:09,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52885927] [2021-05-21 15:24:09,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:09,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:24:09,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:24:09,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-21 15:24:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2518 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:09,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52885927] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:09,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:09,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-05-21 15:24:09,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441861153] [2021-05-21 15:24:09,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-21 15:24:09,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:09,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-21 15:24:09,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 15:24:09,848 INFO L87 Difference]: Start difference. First operand 894 states and 1590 transitions. Second operand has 69 states, 69 states have (on average 2.8550724637681157) internal successors, (197), 69 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:11,572 INFO L93 Difference]: Finished difference Result 902 states and 1598 transitions. [2021-05-21 15:24:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-21 15:24:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8550724637681157) internal successors, (197), 69 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2021-05-21 15:24:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:11,573 INFO L225 Difference]: With dead ends: 902 [2021-05-21 15:24:11,573 INFO L226 Difference]: Without dead ends: 902 [2021-05-21 15:24:11,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 2496.0ms TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2021-05-21 15:24:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-05-21 15:24:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 899. [2021-05-21 15:24:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 896 states have (on average 1.7801339285714286) internal successors, (1595), 898 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1595 transitions. [2021-05-21 15:24:11,583 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1595 transitions. Word has length 197 [2021-05-21 15:24:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:11,583 INFO L482 AbstractCegarLoop]: Abstraction has 899 states and 1595 transitions. [2021-05-21 15:24:11,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.8550724637681157) internal successors, (197), 69 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1595 transitions. [2021-05-21 15:24:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-05-21 15:24:11,584 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:11,584 INFO L521 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 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] [2021-05-21 15:24:11,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-21 15:24:11,789 INFO L430 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:11,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1050620709, now seen corresponding path program 33 times [2021-05-21 15:24:11,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:11,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720681699] [2021-05-21 15:24:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2679 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:12,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:12,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720681699] [2021-05-21 15:24:12,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720681699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:12,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397575452] [2021-05-21 15:24:12,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:39,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-21 15:24:39,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:24:39,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-21 15:24:39,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2679 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:39,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397575452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:39,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:39,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-05-21 15:24:39,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323977633] [2021-05-21 15:24:39,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-21 15:24:39,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-21 15:24:39,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 15:24:39,460 INFO L87 Difference]: Start difference. First operand 899 states and 1595 transitions. Second operand has 71 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 71 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:41,315 INFO L93 Difference]: Finished difference Result 907 states and 1603 transitions. [2021-05-21 15:24:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-21 15:24:41,315 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 71 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2021-05-21 15:24:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:41,316 INFO L225 Difference]: With dead ends: 907 [2021-05-21 15:24:41,316 INFO L226 Difference]: Without dead ends: 907 [2021-05-21 15:24:41,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 2639.0ms TimeCoverageRelationStatistics Valid=5852, Invalid=12780, Unknown=0, NotChecked=0, Total=18632 [2021-05-21 15:24:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-05-21 15:24:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 904. [2021-05-21 15:24:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 901 states have (on average 1.7758046614872365) internal successors, (1600), 903 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1600 transitions. [2021-05-21 15:24:41,326 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1600 transitions. Word has length 202 [2021-05-21 15:24:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:41,326 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 1600 transitions. [2021-05-21 15:24:41,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 71 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1600 transitions. [2021-05-21 15:24:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-21 15:24:41,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:41,327 INFO L521 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 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] [2021-05-21 15:24:41,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-21 15:24:41,528 INFO L430 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash 913946105, now seen corresponding path program 34 times [2021-05-21 15:24:41,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:41,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072947206] [2021-05-21 15:24:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2845 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:42,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:42,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072947206] [2021-05-21 15:24:42,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072947206] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:42,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530537224] [2021-05-21 15:24:42,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:42,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:24:42,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:24:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-21 15:24:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2845 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:43,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530537224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:43,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:43,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-05-21 15:24:43,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916856677] [2021-05-21 15:24:43,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-21 15:24:43,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-21 15:24:43,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 15:24:43,091 INFO L87 Difference]: Start difference. First operand 904 states and 1600 transitions. Second operand has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 73 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:44,905 INFO L93 Difference]: Finished difference Result 912 states and 1608 transitions. [2021-05-21 15:24:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-21 15:24:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 73 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-05-21 15:24:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:44,907 INFO L225 Difference]: With dead ends: 912 [2021-05-21 15:24:44,907 INFO L226 Difference]: Without dead ends: 912 [2021-05-21 15:24:44,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 2795.2ms TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2021-05-21 15:24:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-05-21 15:24:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 909. [2021-05-21 15:24:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 906 states have (on average 1.771523178807947) internal successors, (1605), 908 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1605 transitions. [2021-05-21 15:24:44,925 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1605 transitions. Word has length 207 [2021-05-21 15:24:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:44,925 INFO L482 AbstractCegarLoop]: Abstraction has 909 states and 1605 transitions. [2021-05-21 15:24:44,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 73 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1605 transitions. [2021-05-21 15:24:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-05-21 15:24:44,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:44,926 INFO L521 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 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] [2021-05-21 15:24:45,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-21 15:24:45,141 INFO L430 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -54800485, now seen corresponding path program 35 times [2021-05-21 15:24:45,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:45,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079181087] [2021-05-21 15:24:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:46,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:46,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079181087] [2021-05-21 15:24:46,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079181087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:46,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410962279] [2021-05-21 15:24:46,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:24:54,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-21 15:24:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:24:54,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-21 15:24:54,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:24:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:55,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410962279] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:55,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:24:55,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-05-21 15:24:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726059855] [2021-05-21 15:24:55,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-21 15:24:55,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:24:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-21 15:24:55,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2021-05-21 15:24:55,117 INFO L87 Difference]: Start difference. First operand 909 states and 1605 transitions. Second operand has 75 states, 75 states have (on average 2.8266666666666667) internal successors, (212), 75 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:24:57,181 INFO L93 Difference]: Finished difference Result 917 states and 1613 transitions. [2021-05-21 15:24:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-21 15:24:57,181 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.8266666666666667) internal successors, (212), 75 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2021-05-21 15:24:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:24:57,182 INFO L225 Difference]: With dead ends: 917 [2021-05-21 15:24:57,182 INFO L226 Difference]: Without dead ends: 917 [2021-05-21 15:24:57,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 2951.0ms TimeCoverageRelationStatistics Valid=6556, Invalid=14324, Unknown=0, NotChecked=0, Total=20880 [2021-05-21 15:24:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-05-21 15:24:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 914. [2021-05-21 15:24:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 911 states have (on average 1.7672886937431393) internal successors, (1610), 913 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1610 transitions. [2021-05-21 15:24:57,192 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1610 transitions. Word has length 212 [2021-05-21 15:24:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:24:57,192 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 1610 transitions. [2021-05-21 15:24:57,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.8266666666666667) internal successors, (212), 75 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:24:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1610 transitions. [2021-05-21 15:24:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-21 15:24:57,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:24:57,193 INFO L521 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 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] [2021-05-21 15:24:57,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-21 15:24:57,394 INFO L430 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:24:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:24:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1923978439, now seen corresponding path program 36 times [2021-05-21 15:24:57,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:24:57,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569189835] [2021-05-21 15:24:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:24:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:24:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:24:58,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:24:58,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569189835] [2021-05-21 15:24:58,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569189835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:24:58,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634861194] [2021-05-21 15:24:58,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:25:59,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-21 15:25:59,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:25:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-21 15:25:59,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:25:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:25:59,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634861194] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:25:59,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:25:59,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-05-21 15:25:59,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219322818] [2021-05-21 15:25:59,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-21 15:25:59,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:25:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-21 15:25:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 15:25:59,489 INFO L87 Difference]: Start difference. First operand 914 states and 1610 transitions. Second operand has 77 states, 77 states have (on average 2.8181818181818183) internal successors, (217), 77 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:26:01,665 INFO L93 Difference]: Finished difference Result 922 states and 1618 transitions. [2021-05-21 15:26:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-21 15:26:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.8181818181818183) internal successors, (217), 77 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2021-05-21 15:26:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:26:01,666 INFO L225 Difference]: With dead ends: 922 [2021-05-21 15:26:01,666 INFO L226 Difference]: Without dead ends: 922 [2021-05-21 15:26:01,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 3187.4ms TimeCoverageRelationStatistics Valid=6923, Invalid=15129, Unknown=0, NotChecked=0, Total=22052 [2021-05-21 15:26:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-05-21 15:26:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 919. [2021-05-21 15:26:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 916 states have (on average 1.7631004366812226) internal successors, (1615), 918 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1615 transitions. [2021-05-21 15:26:01,676 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1615 transitions. Word has length 217 [2021-05-21 15:26:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:26:01,676 INFO L482 AbstractCegarLoop]: Abstraction has 919 states and 1615 transitions. [2021-05-21 15:26:01,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.8181818181818183) internal successors, (217), 77 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1615 transitions. [2021-05-21 15:26:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-05-21 15:26:01,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:26:01,677 INFO L521 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 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] [2021-05-21 15:26:01,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-21 15:26:01,905 INFO L430 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:26:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:26:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash 2000839259, now seen corresponding path program 37 times [2021-05-21 15:26:01,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:26:01,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405706901] [2021-05-21 15:26:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:26:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3373 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:03,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:26:03,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405706901] [2021-05-21 15:26:03,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405706901] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:03,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136707489] [2021-05-21 15:26:03,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:03,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-21 15:26:03,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:26:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3373 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:03,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136707489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:03,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:26:03,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-05-21 15:26:03,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957205434] [2021-05-21 15:26:03,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-21 15:26:03,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:26:03,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-21 15:26:03,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2021-05-21 15:26:03,811 INFO L87 Difference]: Start difference. First operand 919 states and 1615 transitions. Second operand has 79 states, 79 states have (on average 2.810126582278481) internal successors, (222), 79 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:26:06,006 INFO L93 Difference]: Finished difference Result 927 states and 1623 transitions. [2021-05-21 15:26:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-21 15:26:06,007 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.810126582278481) internal successors, (222), 79 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2021-05-21 15:26:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:26:06,008 INFO L225 Difference]: With dead ends: 927 [2021-05-21 15:26:06,008 INFO L226 Difference]: Without dead ends: 927 [2021-05-21 15:26:06,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 3364.4ms TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2021-05-21 15:26:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-05-21 15:26:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 924. [2021-05-21 15:26:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 921 states have (on average 1.758957654723127) internal successors, (1620), 923 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1620 transitions. [2021-05-21 15:26:06,033 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1620 transitions. Word has length 222 [2021-05-21 15:26:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:26:06,033 INFO L482 AbstractCegarLoop]: Abstraction has 924 states and 1620 transitions. [2021-05-21 15:26:06,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.810126582278481) internal successors, (222), 79 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1620 transitions. [2021-05-21 15:26:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-21 15:26:06,034 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:26:06,034 INFO L521 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 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] [2021-05-21 15:26:06,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-21 15:26:06,234 INFO L430 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:26:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:26:06,235 INFO L82 PathProgramCache]: Analyzing trace with hash 565809273, now seen corresponding path program 38 times [2021-05-21 15:26:06,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:26:06,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093409443] [2021-05-21 15:26:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:26:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:07,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:26:07,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093409443] [2021-05-21 15:26:07,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093409443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:07,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028801281] [2021-05-21 15:26:07,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:07,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:26:07,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:26:07,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-21 15:26:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:26:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:08,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028801281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:08,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:26:08,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-05-21 15:26:08,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190694140] [2021-05-21 15:26:08,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-21 15:26:08,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:26:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-21 15:26:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2021-05-21 15:26:08,159 INFO L87 Difference]: Start difference. First operand 924 states and 1620 transitions. Second operand has 81 states, 81 states have (on average 2.802469135802469) internal successors, (227), 81 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:26:10,554 INFO L93 Difference]: Finished difference Result 932 states and 1628 transitions. [2021-05-21 15:26:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-21 15:26:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.802469135802469) internal successors, (227), 81 states have internal predecessors, (227), 0 states have call successors, (0), 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 [2021-05-21 15:26:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:26:10,555 INFO L225 Difference]: With dead ends: 932 [2021-05-21 15:26:10,555 INFO L226 Difference]: Without dead ends: 932 [2021-05-21 15:26:10,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 3530.6ms TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2021-05-21 15:26:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-05-21 15:26:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 929. [2021-05-21 15:26:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 926 states have (on average 1.7548596112311015) internal successors, (1625), 928 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1625 transitions. [2021-05-21 15:26:10,565 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1625 transitions. Word has length 227 [2021-05-21 15:26:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:26:10,565 INFO L482 AbstractCegarLoop]: Abstraction has 929 states and 1625 transitions. [2021-05-21 15:26:10,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.802469135802469) internal successors, (227), 81 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:10,566 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1625 transitions. [2021-05-21 15:26:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-05-21 15:26:10,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:26:10,567 INFO L521 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 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] [2021-05-21 15:26:10,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-21 15:26:10,773 INFO L430 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:26:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:26:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash 465601819, now seen corresponding path program 39 times [2021-05-21 15:26:10,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:26:10,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389699309] [2021-05-21 15:26:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:26:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:12,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:26:12,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389699309] [2021-05-21 15:26:12,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389699309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:12,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570331238] [2021-05-21 15:26:12,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:15,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-21 15:26:15,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:26:15,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-21 15:26:15,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:26:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:15,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570331238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:15,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:26:15,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-05-21 15:26:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46726302] [2021-05-21 15:26:15,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-21 15:26:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:26:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-21 15:26:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2021-05-21 15:26:15,873 INFO L87 Difference]: Start difference. First operand 929 states and 1625 transitions. Second operand has 83 states, 83 states have (on average 2.7951807228915664) internal successors, (232), 83 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:26:18,418 INFO L93 Difference]: Finished difference Result 937 states and 1633 transitions. [2021-05-21 15:26:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-21 15:26:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.7951807228915664) internal successors, (232), 83 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2021-05-21 15:26:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:26:18,419 INFO L225 Difference]: With dead ends: 937 [2021-05-21 15:26:18,419 INFO L226 Difference]: Without dead ends: 937 [2021-05-21 15:26:18,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 3767.5ms TimeCoverageRelationStatistics Valid=8084, Invalid=17676, Unknown=0, NotChecked=0, Total=25760 [2021-05-21 15:26:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-05-21 15:26:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 934. [2021-05-21 15:26:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 931 states have (on average 1.7508055853920517) internal successors, (1630), 933 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1630 transitions. [2021-05-21 15:26:18,429 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1630 transitions. Word has length 232 [2021-05-21 15:26:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:26:18,429 INFO L482 AbstractCegarLoop]: Abstraction has 934 states and 1630 transitions. [2021-05-21 15:26:18,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.7951807228915664) internal successors, (232), 83 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1630 transitions. [2021-05-21 15:26:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-21 15:26:18,430 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:26:18,430 INFO L521 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 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] [2021-05-21 15:26:18,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:18,635 INFO L430 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:26:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:26:18,635 INFO L82 PathProgramCache]: Analyzing trace with hash -396155463, now seen corresponding path program 40 times [2021-05-21 15:26:18,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:26:18,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633908853] [2021-05-21 15:26:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:26:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:20,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:26:20,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633908853] [2021-05-21 15:26:20,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633908853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:20,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471956309] [2021-05-21 15:26:20,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:20,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:26:20,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:26:20,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-21 15:26:20,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:26:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:20,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471956309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:20,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:26:20,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-05-21 15:26:20,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427885562] [2021-05-21 15:26:20,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-21 15:26:20,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:26:20,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-21 15:26:20,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2021-05-21 15:26:20,773 INFO L87 Difference]: Start difference. First operand 934 states and 1630 transitions. Second operand has 85 states, 85 states have (on average 2.788235294117647) internal successors, (237), 85 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:26:23,251 INFO L93 Difference]: Finished difference Result 942 states and 1638 transitions. [2021-05-21 15:26:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-21 15:26:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.788235294117647) internal successors, (237), 85 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2021-05-21 15:26:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:26:23,253 INFO L225 Difference]: With dead ends: 942 [2021-05-21 15:26:23,253 INFO L226 Difference]: Without dead ends: 942 [2021-05-21 15:26:23,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 3910.2ms TimeCoverageRelationStatistics Valid=8491, Invalid=18569, Unknown=0, NotChecked=0, Total=27060 [2021-05-21 15:26:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-05-21 15:26:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 939. [2021-05-21 15:26:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 936 states have (on average 1.7467948717948718) internal successors, (1635), 938 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1635 transitions. [2021-05-21 15:26:23,264 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1635 transitions. Word has length 237 [2021-05-21 15:26:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:26:23,264 INFO L482 AbstractCegarLoop]: Abstraction has 939 states and 1635 transitions. [2021-05-21 15:26:23,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.788235294117647) internal successors, (237), 85 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:26:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1635 transitions. [2021-05-21 15:26:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-05-21 15:26:23,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:26:23,266 INFO L521 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 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] [2021-05-21 15:26:23,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:26:23,481 INFO L430 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:26:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:26:23,481 INFO L82 PathProgramCache]: Analyzing trace with hash -972933157, now seen corresponding path program 41 times [2021-05-21 15:26:23,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:26:23,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397761800] [2021-05-21 15:26:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:26:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:26:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4147 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:26:25,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:26:25,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397761800] [2021-05-21 15:26:25,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397761800] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:26:25,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375337538] [2021-05-21 15:26:25,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:27:28,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-21 15:27:28,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:27:28,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-21 15:27:28,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:27:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4147 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:27:28,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375337538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:27:28,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:27:28,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-05-21 15:27:28,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790600332] [2021-05-21 15:27:28,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-21 15:27:28,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:27:28,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-21 15:27:28,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2021-05-21 15:27:28,601 INFO L87 Difference]: Start difference. First operand 939 states and 1635 transitions. Second operand has 87 states, 87 states have (on average 2.781609195402299) internal successors, (242), 87 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:27:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:27:31,196 INFO L93 Difference]: Finished difference Result 947 states and 1643 transitions. [2021-05-21 15:27:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-05-21 15:27:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.781609195402299) internal successors, (242), 87 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2021-05-21 15:27:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:27:31,198 INFO L225 Difference]: With dead ends: 947 [2021-05-21 15:27:31,198 INFO L226 Difference]: Without dead ends: 947 [2021-05-21 15:27:31,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 4106.4ms TimeCoverageRelationStatistics Valid=8908, Invalid=19484, Unknown=0, NotChecked=0, Total=28392 [2021-05-21 15:27:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-05-21 15:27:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 944. [2021-05-21 15:27:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 941 states have (on average 1.742826780021254) internal successors, (1640), 943 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:27:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1640 transitions. [2021-05-21 15:27:31,205 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1640 transitions. Word has length 242 [2021-05-21 15:27:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:27:31,206 INFO L482 AbstractCegarLoop]: Abstraction has 944 states and 1640 transitions. [2021-05-21 15:27:31,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.781609195402299) internal successors, (242), 87 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:27:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1640 transitions. [2021-05-21 15:27:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-21 15:27:31,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:27:31,207 INFO L521 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 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] [2021-05-21 15:27:31,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-21 15:27:31,409 INFO L430 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:27:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:27:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2063389959, now seen corresponding path program 42 times [2021-05-21 15:27:31,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:27:31,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268189570] [2021-05-21 15:27:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:27:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:27:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4353 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:27:33,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:27:33,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268189570] [2021-05-21 15:27:33,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268189570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:27:33,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500125650] [2021-05-21 15:27:33,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:29:14,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-21 15:29:14,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:29:15,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-21 15:29:15,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:29:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4353 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:15,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500125650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:15,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:29:15,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2021-05-21 15:29:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847712578] [2021-05-21 15:29:15,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-21 15:29:15,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:29:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-21 15:29:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=5808, Unknown=0, NotChecked=0, Total=7832 [2021-05-21 15:29:15,368 INFO L87 Difference]: Start difference. First operand 944 states and 1640 transitions. Second operand has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 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) [2021-05-21 15:29:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:29:18,089 INFO L93 Difference]: Finished difference Result 952 states and 1648 transitions. [2021-05-21 15:29:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-05-21 15:29:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 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) Word has length 247 [2021-05-21 15:29:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:29:18,090 INFO L225 Difference]: With dead ends: 952 [2021-05-21 15:29:18,090 INFO L226 Difference]: Without dead ends: 952 [2021-05-21 15:29:18,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5616 ImplicationChecksByTransitivity, 4182.7ms TimeCoverageRelationStatistics Valid=9335, Invalid=20421, Unknown=0, NotChecked=0, Total=29756 [2021-05-21 15:29:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-05-21 15:29:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 949. [2021-05-21 15:29:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 946 states have (on average 1.7389006342494715) internal successors, (1645), 948 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1645 transitions. [2021-05-21 15:29:18,098 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1645 transitions. Word has length 247 [2021-05-21 15:29:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:29:18,098 INFO L482 AbstractCegarLoop]: Abstraction has 949 states and 1645 transitions. [2021-05-21 15:29:18,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 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) [2021-05-21 15:29:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1645 transitions. [2021-05-21 15:29:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-05-21 15:29:18,099 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:29:18,099 INFO L521 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 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] [2021-05-21 15:29:18,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:29:18,300 INFO L430 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:29:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:29:18,300 INFO L82 PathProgramCache]: Analyzing trace with hash 47413915, now seen corresponding path program 43 times [2021-05-21 15:29:18,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:29:18,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75226878] [2021-05-21 15:29:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:29:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:29:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4564 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:20,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:29:20,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75226878] [2021-05-21 15:29:20,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75226878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:20,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886093155] [2021-05-21 15:29:20,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:29:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:29:20,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-21 15:29:20,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:29:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4564 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:20,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886093155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:20,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:29:20,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2021-05-21 15:29:20,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645143487] [2021-05-21 15:29:20,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-21 15:29:20,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:29:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-21 15:29:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2021-05-21 15:29:20,700 INFO L87 Difference]: Start difference. First operand 949 states and 1645 transitions. Second operand has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:29:23,546 INFO L93 Difference]: Finished difference Result 957 states and 1653 transitions. [2021-05-21 15:29:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-05-21 15:29:23,547 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2021-05-21 15:29:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:29:23,549 INFO L225 Difference]: With dead ends: 957 [2021-05-21 15:29:23,549 INFO L226 Difference]: Without dead ends: 957 [2021-05-21 15:29:23,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5879 ImplicationChecksByTransitivity, 4438.0ms TimeCoverageRelationStatistics Valid=9772, Invalid=21380, Unknown=0, NotChecked=0, Total=31152 [2021-05-21 15:29:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-05-21 15:29:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 954. [2021-05-21 15:29:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 951 states have (on average 1.7350157728706626) internal successors, (1650), 953 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1650 transitions. [2021-05-21 15:29:23,560 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1650 transitions. Word has length 252 [2021-05-21 15:29:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:29:23,560 INFO L482 AbstractCegarLoop]: Abstraction has 954 states and 1650 transitions. [2021-05-21 15:29:23,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1650 transitions. [2021-05-21 15:29:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-21 15:29:23,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:29:23,561 INFO L521 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 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] [2021-05-21 15:29:23,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:29:23,777 INFO L430 AbstractCegarLoop]: === Iteration 46 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:29:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:29:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1974624199, now seen corresponding path program 44 times [2021-05-21 15:29:23,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:29:23,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533613638] [2021-05-21 15:29:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:29:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:29:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4780 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:25,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:29:25,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533613638] [2021-05-21 15:29:25,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533613638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:25,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238812334] [2021-05-21 15:29:25,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:29:25,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 15:29:25,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:29:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-21 15:29:25,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:29:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4780 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:26,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238812334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:26,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:29:26,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-05-21 15:29:26,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106787745] [2021-05-21 15:29:26,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-21 15:29:26,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:29:26,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-21 15:29:26,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2208, Invalid=6348, Unknown=0, NotChecked=0, Total=8556 [2021-05-21 15:29:26,150 INFO L87 Difference]: Start difference. First operand 954 states and 1650 transitions. Second operand has 93 states, 93 states have (on average 2.763440860215054) internal successors, (257), 93 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:29:29,144 INFO L93 Difference]: Finished difference Result 962 states and 1658 transitions. [2021-05-21 15:29:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-21 15:29:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.763440860215054) internal successors, (257), 93 states have internal predecessors, (257), 0 states have call successors, (0), 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 [2021-05-21 15:29:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:29:29,145 INFO L225 Difference]: With dead ends: 962 [2021-05-21 15:29:29,145 INFO L226 Difference]: Without dead ends: 962 [2021-05-21 15:29:29,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6148 ImplicationChecksByTransitivity, 4542.4ms TimeCoverageRelationStatistics Valid=10219, Invalid=22361, Unknown=0, NotChecked=0, Total=32580 [2021-05-21 15:29:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-05-21 15:29:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 959. [2021-05-21 15:29:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 956 states have (on average 1.7311715481171548) internal successors, (1655), 958 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1655 transitions. [2021-05-21 15:29:29,153 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1655 transitions. Word has length 257 [2021-05-21 15:29:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:29:29,154 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 1655 transitions. [2021-05-21 15:29:29,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.763440860215054) internal successors, (257), 93 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:29:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1655 transitions. [2021-05-21 15:29:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-05-21 15:29:29,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:29:29,155 INFO L521 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 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] [2021-05-21 15:29:29,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-21 15:29:29,355 INFO L430 AbstractCegarLoop]: === Iteration 47 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:29:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:29:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash -805286565, now seen corresponding path program 45 times [2021-05-21 15:29:29,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:29:29,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651398225] [2021-05-21 15:29:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:29:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:29:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5001 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:29:31,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:29:31,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651398225] [2021-05-21 15:29:31,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651398225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:29:31,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954353161] [2021-05-21 15:29:31,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:31:19,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-21 15:31:19,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:31:19,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-21 15:31:19,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:31:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5001 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:31:19,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954353161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:31:19,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:31:19,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 95 [2021-05-21 15:31:19,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724677318] [2021-05-21 15:31:19,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-21 15:31:19,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:31:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-21 15:31:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2303, Invalid=6627, Unknown=0, NotChecked=0, Total=8930 [2021-05-21 15:31:19,570 INFO L87 Difference]: Start difference. First operand 959 states and 1655 transitions. Second operand has 95 states, 95 states have (on average 2.7578947368421054) internal successors, (262), 95 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:31:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:31:22,703 INFO L93 Difference]: Finished difference Result 967 states and 1663 transitions. [2021-05-21 15:31:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-05-21 15:31:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.7578947368421054) internal successors, (262), 95 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2021-05-21 15:31:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:31:22,704 INFO L225 Difference]: With dead ends: 967 [2021-05-21 15:31:22,704 INFO L226 Difference]: Without dead ends: 967 [2021-05-21 15:31:22,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6423 ImplicationChecksByTransitivity, 4765.7ms TimeCoverageRelationStatistics Valid=10676, Invalid=23364, Unknown=0, NotChecked=0, Total=34040 [2021-05-21 15:31:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-05-21 15:31:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 964. [2021-05-21 15:31:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 961 states have (on average 1.7273673257023934) internal successors, (1660), 963 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:31:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1660 transitions. [2021-05-21 15:31:22,712 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1660 transitions. Word has length 262 [2021-05-21 15:31:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:31:22,712 INFO L482 AbstractCegarLoop]: Abstraction has 964 states and 1660 transitions. [2021-05-21 15:31:22,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.7578947368421054) internal successors, (262), 95 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:31:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1660 transitions. [2021-05-21 15:31:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-05-21 15:31:22,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:31:22,713 INFO L521 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 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] [2021-05-21 15:31:22,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-21 15:31:22,914 INFO L430 AbstractCegarLoop]: === Iteration 48 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:31:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:31:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1175026311, now seen corresponding path program 46 times [2021-05-21 15:31:22,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:31:22,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206910247] [2021-05-21 15:31:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:31:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:31:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5227 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:31:25,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:31:25,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206910247] [2021-05-21 15:31:25,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206910247] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:31:25,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522626920] [2021-05-21 15:31:25,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:31:25,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 15:31:25,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:31:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-21 15:31:25,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:31:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5227 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:31:25,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522626920] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:31:25,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:31:25,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 97 [2021-05-21 15:31:25,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819738330] [2021-05-21 15:31:25,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-21 15:31:25,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:31:25,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-21 15:31:25,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2400, Invalid=6912, Unknown=0, NotChecked=0, Total=9312 [2021-05-21 15:31:25,527 INFO L87 Difference]: Start difference. First operand 964 states and 1660 transitions. Second operand has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 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) [2021-05-21 15:31:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:31:28,860 INFO L93 Difference]: Finished difference Result 972 states and 1668 transitions. [2021-05-21 15:31:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-05-21 15:31:28,861 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 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) Word has length 267 [2021-05-21 15:31:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:31:28,862 INFO L225 Difference]: With dead ends: 972 [2021-05-21 15:31:28,862 INFO L226 Difference]: Without dead ends: 972 [2021-05-21 15:31:28,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6704 ImplicationChecksByTransitivity, 5107.8ms TimeCoverageRelationStatistics Valid=11143, Invalid=24389, Unknown=0, NotChecked=0, Total=35532 [2021-05-21 15:31:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-05-21 15:31:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 969. [2021-05-21 15:31:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 966 states have (on average 1.7236024844720497) internal successors, (1665), 968 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:31:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1665 transitions. [2021-05-21 15:31:28,870 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1665 transitions. Word has length 267 [2021-05-21 15:31:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:31:28,870 INFO L482 AbstractCegarLoop]: Abstraction has 969 states and 1665 transitions. [2021-05-21 15:31:28,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 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) [2021-05-21 15:31:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1665 transitions. [2021-05-21 15:31:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-05-21 15:31:28,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:31:28,871 INFO L521 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 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] [2021-05-21 15:31:29,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-21 15:31:29,072 INFO L430 AbstractCegarLoop]: === Iteration 49 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:31:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:31:29,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1549053979, now seen corresponding path program 47 times [2021-05-21 15:31:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:31:29,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381898240] [2021-05-21 15:31:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:31:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:31:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5458 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:31:31,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:31:31,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381898240] [2021-05-21 15:31:31,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381898240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:31:31,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498433147] [2021-05-21 15:31:31,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:32:29,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-21 15:32:29,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 15:32:29,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-21 15:32:29,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 15:32:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5458 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:32:29,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498433147] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:32:29,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 15:32:29,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-05-21 15:32:29,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645910612] [2021-05-21 15:32:29,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-21 15:32:29,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 15:32:29,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-21 15:32:29,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2499, Invalid=7203, Unknown=0, NotChecked=0, Total=9702 [2021-05-21 15:32:29,845 INFO L87 Difference]: Start difference. First operand 969 states and 1665 transitions. Second operand has 99 states, 99 states have (on average 2.7474747474747474) internal successors, (272), 99 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:32:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 15:32:33,152 INFO L93 Difference]: Finished difference Result 977 states and 1673 transitions. [2021-05-21 15:32:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-05-21 15:32:33,157 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.7474747474747474) internal successors, (272), 99 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2021-05-21 15:32:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 15:32:33,157 INFO L225 Difference]: With dead ends: 977 [2021-05-21 15:32:33,158 INFO L226 Difference]: Without dead ends: 977 [2021-05-21 15:32:33,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6991 ImplicationChecksByTransitivity, 5120.6ms TimeCoverageRelationStatistics Valid=11620, Invalid=25436, Unknown=0, NotChecked=0, Total=37056 [2021-05-21 15:32:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-05-21 15:32:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 974. [2021-05-21 15:32:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 971 states have (on average 1.7198764160659115) internal successors, (1670), 973 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:32:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1670 transitions. [2021-05-21 15:32:33,166 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1670 transitions. Word has length 272 [2021-05-21 15:32:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 15:32:33,166 INFO L482 AbstractCegarLoop]: Abstraction has 974 states and 1670 transitions. [2021-05-21 15:32:33,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.7474747474747474) internal successors, (272), 99 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 15:32:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1670 transitions. [2021-05-21 15:32:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-21 15:32:33,167 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 15:32:33,167 INFO L521 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 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] [2021-05-21 15:32:33,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 15:32:33,368 INFO L430 AbstractCegarLoop]: === Iteration 50 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-21 15:32:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 15:32:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1152506553, now seen corresponding path program 48 times [2021-05-21 15:32:33,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 15:32:33,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413951668] [2021-05-21 15:32:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 15:32:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 15:32:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5694 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-21 15:32:35,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 15:32:35,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413951668] [2021-05-21 15:32:35,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413951668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 15:32:35,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551256762] [2021-05-21 15:32:35,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown