/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 11:32:32,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 11:32:32,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 11:32:32,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 11:32:32,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 11:32:32,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 11:32:32,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 11:32:32,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 11:32:32,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 11:32:32,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 11:32:32,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 11:32:32,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 11:32:32,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 11:32:32,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 11:32:32,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 11:32:32,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 11:32:32,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 11:32:32,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 11:32:32,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 11:32:32,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 11:32:32,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 11:32:32,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 11:32:32,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 11:32:32,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 11:32:32,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 11:32:32,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 11:32:32,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 11:32:32,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 11:32:32,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 11:32:32,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 11:32:32,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 11:32:32,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 11:32:32,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 11:32:32,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 11:32:32,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 11:32:32,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 11:32:32,576 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 [2021-01-20 11:32:32,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 11:32:32,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 11:32:32,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 11:32:32,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 11:32:32,631 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 11:32:32,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 11:32:32,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 11:32:32,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 11:32:32,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 11:32:32,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 11:32:32,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 11:32:32,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 11:32:32,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 11:32:32,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 11:32:32,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 11:32:32,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 11:32:32,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 11:32:32,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 11:32:32,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 11:32:32,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 11:32:32,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 11:32:32,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 11:32:32,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 11:32:32,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 11:32:32,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 11:32:32,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 11:32:32,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 11:32:32,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 11:32:32,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 11:32:32,638 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 11:32:32,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 11:32:33,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 11:32:33,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 11:32:33,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 11:32:33,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 11:32:33,065 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 11:32:33,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2021-01-20 11:32:33,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef50ac03/7c7931c1f81f498cb56b1cb248ac3f62/FLAG5a87566bd [2021-01-20 11:32:33,858 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 11:32:33,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2021-01-20 11:32:33,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef50ac03/7c7931c1f81f498cb56b1cb248ac3f62/FLAG5a87566bd [2021-01-20 11:32:34,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef50ac03/7c7931c1f81f498cb56b1cb248ac3f62 [2021-01-20 11:32:34,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 11:32:34,101 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 11:32:34,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 11:32:34,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 11:32:34,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 11:32:34,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:32:34" (1/1) ... [2021-01-20 11:32:34,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea8f04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:34, skipping insertion in model container [2021-01-20 11:32:34,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:32:34" (1/1) ... [2021-01-20 11:32:34,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 11:32:34,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 11:32:34,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 11:32:35,026 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 11:32:35,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 11:32:35,324 INFO L208 MainTranslator]: Completed translation [2021-01-20 11:32:35,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35 WrapperNode [2021-01-20 11:32:35,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 11:32:35,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 11:32:35,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 11:32:35,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 11:32:35,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 11:32:35,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 11:32:35,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 11:32:35,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 11:32:35,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (1/1) ... [2021-01-20 11:32:35,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 11:32:35,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 11:32:35,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 11:32:35,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 11:32:35,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (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 [2021-01-20 11:32:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 11:32:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 11:32:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 11:32:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2021-01-20 11:32:35,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2021-01-20 11:32:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 11:32:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-20 11:32:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 11:32:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 11:32:35,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 11:32:35,532 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 11:32:35,997 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 11:32:35,997 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-20 11:32:35,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:32:35 BoogieIcfgContainer [2021-01-20 11:32:35,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 11:32:36,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 11:32:36,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 11:32:36,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 11:32:36,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:32:34" (1/3) ... [2021-01-20 11:32:36,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5ddeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:32:36, skipping insertion in model container [2021-01-20 11:32:36,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:32:35" (2/3) ... [2021-01-20 11:32:36,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5ddeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:32:36, skipping insertion in model container [2021-01-20 11:32:36,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:32:35" (3/3) ... [2021-01-20 11:32:36,009 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2021-01-20 11:32:36,025 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 11:32:36,025 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 11:32:36,029 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 11:32:36,030 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 11:32:36,065 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,066 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,066 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,066 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,066 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,067 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,067 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,067 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,067 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,068 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,068 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,068 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,068 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,069 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,069 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,069 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,069 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,069 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,070 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,070 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,070 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,070 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,071 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,071 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,071 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,071 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,072 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,072 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,072 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,072 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,073 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,073 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,073 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,074 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,074 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,074 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,074 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,075 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,075 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,075 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,075 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,076 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,076 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,076 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,076 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,077 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,077 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,077 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,077 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,077 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,078 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,078 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,078 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,078 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,079 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,079 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,079 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,079 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,080 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,080 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,080 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,080 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,080 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,081 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,081 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,081 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,081 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,082 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,082 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,082 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,082 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,083 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,083 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,083 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,083 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,083 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,084 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,084 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,084 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,085 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,085 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,085 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,085 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,085 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,086 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,086 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,086 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,086 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,087 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,087 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,087 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,087 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,087 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,088 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,088 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,088 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,088 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,088 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,089 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,089 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,089 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,089 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,090 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,090 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,090 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,090 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,090 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,091 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,091 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,091 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,091 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,091 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,092 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,092 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,092 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,092 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,093 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,093 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,093 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,093 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,094 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,094 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,094 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,094 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,095 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,095 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,095 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,095 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,096 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,096 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,096 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,096 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,096 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,097 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,097 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,097 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,097 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,097 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,098 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,098 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,098 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,098 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,099 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,099 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,099 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,099 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,099 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,100 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,100 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,100 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,100 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,100 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,101 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,101 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,101 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,101 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,102 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,102 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,102 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,102 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,103 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,103 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,103 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,103 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,103 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,104 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,104 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,104 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,104 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,105 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,105 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,105 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,105 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,106 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,106 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,106 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,106 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,106 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,107 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,107 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,107 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,108 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,110 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,110 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,111 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,111 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,111 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,111 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,112 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,112 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,112 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,112 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,113 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,113 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,113 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,113 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,113 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,114 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,114 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,114 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,114 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,114 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,115 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,115 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,115 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,115 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,116 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,116 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,116 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 11:32:36,123 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-20 11:32:36,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-20 11:32:36,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 11:32:36,163 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 11:32:36,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 11:32:36,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 11:32:36,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 11:32:36,163 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 11:32:36,163 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 11:32:36,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 11:32:36,179 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 114 transitions, 236 flow [2021-01-20 11:32:36,276 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 11:32:36,296 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:36,297 INFO L504 BasicCegarLoop]: trace histogram [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] [2021-01-20 11:32:36,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1689694122, now seen corresponding path program 1 times [2021-01-20 11:32:36,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:36,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389735207] [2021-01-20 11:32:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:36,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389735207] [2021-01-20 11:32:36,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 11:32:36,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 11:32:36,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402146094] [2021-01-20 11:32:36,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 11:32:36,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:36,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 11:32:36,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 11:32:36,592 INFO L87 Difference]: Start difference. First operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:36,653 INFO L93 Difference]: Finished difference Result 1127 states and 2257 transitions. [2021-01-20 11:32:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 11:32:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2021-01-20 11:32:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:36,680 INFO L225 Difference]: With dead ends: 1127 [2021-01-20 11:32:36,680 INFO L226 Difference]: Without dead ends: 1067 [2021-01-20 11:32:36,682 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 11:32:36,682 INFO L78 Accepts]: Start accepts. Automaton has 1067 states. Word has length 32 [2021-01-20 11:32:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:36,683 INFO L481 AbstractCegarLoop]: Abstraction has 1067 states. [2021-01-20 11:32:36,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states. [2021-01-20 11:32:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 11:32:36,686 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:36,687 INFO L504 BasicCegarLoop]: trace histogram [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] [2021-01-20 11:32:36,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 11:32:36,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2099714549, now seen corresponding path program 1 times [2021-01-20 11:32:36,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:36,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790023435] [2021-01-20 11:32:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:36,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790023435] [2021-01-20 11:32:36,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 11:32:36,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 11:32:36,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292597343] [2021-01-20 11:32:36,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 11:32:36,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 11:32:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 11:32:36,808 INFO L87 Difference]: Start difference. First operand 1067 states. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:36,872 INFO L93 Difference]: Finished difference Result 631 states and 1210 transitions. [2021-01-20 11:32:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 11:32:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2021-01-20 11:32:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:36,877 INFO L225 Difference]: With dead ends: 631 [2021-01-20 11:32:36,878 INFO L226 Difference]: Without dead ends: 631 [2021-01-20 11:32:36,879 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 11:32:36,879 INFO L78 Accepts]: Start accepts. Automaton has 631 states. Word has length 32 [2021-01-20 11:32:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:36,879 INFO L481 AbstractCegarLoop]: Abstraction has 631 states. [2021-01-20 11:32:36,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states. [2021-01-20 11:32:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-20 11:32:36,881 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:36,882 INFO L504 BasicCegarLoop]: trace histogram [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] [2021-01-20 11:32:36,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 11:32:36,882 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash 860934943, now seen corresponding path program 1 times [2021-01-20 11:32:36,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:36,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022019141] [2021-01-20 11:32:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022019141] [2021-01-20 11:32:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676609749] [2021-01-20 11:32:36,981 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 [2021-01-20 11:32:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:37,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 11:32:37,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:37,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:37,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 11:32:37,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619355540] [2021-01-20 11:32:37,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 11:32:37,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:37,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 11:32:37,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 11:32:37,163 INFO L87 Difference]: Start difference. First operand 631 states. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:37,273 INFO L93 Difference]: Finished difference Result 636 states and 1215 transitions. [2021-01-20 11:32:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 11:32:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-01-20 11:32:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:37,278 INFO L225 Difference]: With dead ends: 636 [2021-01-20 11:32:37,279 INFO L226 Difference]: Without dead ends: 636 [2021-01-20 11:32:37,279 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-20 11:32:37,279 INFO L78 Accepts]: Start accepts. Automaton has 636 states. Word has length 37 [2021-01-20 11:32:37,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:37,280 INFO L481 AbstractCegarLoop]: Abstraction has 636 states. [2021-01-20 11:32:37,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states. [2021-01-20 11:32:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 11:32:37,282 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:37,282 INFO L504 BasicCegarLoop]: trace histogram [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] [2021-01-20 11:32:37,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-20 11:32:37,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:37,500 INFO L82 PathProgramCache]: Analyzing trace with hash -419544011, now seen corresponding path program 2 times [2021-01-20 11:32:37,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:37,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181890698] [2021-01-20 11:32:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:37,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181890698] [2021-01-20 11:32:37,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480029708] [2021-01-20 11:32:37,658 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 [2021-01-20 11:32:37,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:32:37,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:37,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-20 11:32:37,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:37,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:37,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-20 11:32:37,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125502268] [2021-01-20 11:32:37,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 11:32:37,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 11:32:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-20 11:32:37,840 INFO L87 Difference]: Start difference. First operand 636 states. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:37,955 INFO L93 Difference]: Finished difference Result 641 states and 1220 transitions. [2021-01-20 11:32:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 11:32:37,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2021-01-20 11:32:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:37,960 INFO L225 Difference]: With dead ends: 641 [2021-01-20 11:32:37,960 INFO L226 Difference]: Without dead ends: 641 [2021-01-20 11:32:37,961 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-20 11:32:37,961 INFO L78 Accepts]: Start accepts. Automaton has 641 states. Word has length 42 [2021-01-20 11:32:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:37,961 INFO L481 AbstractCegarLoop]: Abstraction has 641 states. [2021-01-20 11:32:37,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states. [2021-01-20 11:32:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 11:32:37,963 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:37,964 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-01-20 11:32:38,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:38,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:38,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1889145055, now seen corresponding path program 3 times [2021-01-20 11:32:38,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:38,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637448157] [2021-01-20 11:32:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:38,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637448157] [2021-01-20 11:32:38,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546349656] [2021-01-20 11:32:38,339 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 [2021-01-20 11:32:38,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 11:32:38,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:38,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 11:32:38,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:38,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:38,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 11:32:38,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011837774] [2021-01-20 11:32:38,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 11:32:38,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:38,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 11:32:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-20 11:32:38,520 INFO L87 Difference]: Start difference. First operand 641 states. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:38,700 INFO L93 Difference]: Finished difference Result 646 states and 1225 transitions. [2021-01-20 11:32:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 11:32:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2021-01-20 11:32:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:38,706 INFO L225 Difference]: With dead ends: 646 [2021-01-20 11:32:38,706 INFO L226 Difference]: Without dead ends: 646 [2021-01-20 11:32:38,707 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-20 11:32:38,707 INFO L78 Accepts]: Start accepts. Automaton has 646 states. Word has length 47 [2021-01-20 11:32:38,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:38,707 INFO L481 AbstractCegarLoop]: Abstraction has 646 states. [2021-01-20 11:32:38,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states. [2021-01-20 11:32:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 11:32:38,714 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:38,714 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-01-20 11:32:38,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:38,930 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash -292184459, now seen corresponding path program 4 times [2021-01-20 11:32:38,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:38,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736655090] [2021-01-20 11:32:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736655090] [2021-01-20 11:32:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743059128] [2021-01-20 11:32:39,055 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 [2021-01-20 11:32:39,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:32:39,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:39,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 11:32:39,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:39,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:39,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-20 11:32:39,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381800944] [2021-01-20 11:32:39,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 11:32:39,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 11:32:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 11:32:39,228 INFO L87 Difference]: Start difference. First operand 646 states. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:39,491 INFO L93 Difference]: Finished difference Result 651 states and 1230 transitions. [2021-01-20 11:32:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 11:32:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-01-20 11:32:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:39,497 INFO L225 Difference]: With dead ends: 651 [2021-01-20 11:32:39,497 INFO L226 Difference]: Without dead ends: 651 [2021-01-20 11:32:39,503 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-01-20 11:32:39,504 INFO L78 Accepts]: Start accepts. Automaton has 651 states. Word has length 52 [2021-01-20 11:32:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:39,504 INFO L481 AbstractCegarLoop]: Abstraction has 651 states. [2021-01-20 11:32:39,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states. [2021-01-20 11:32:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-20 11:32:39,506 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:39,506 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2021-01-20 11:32:39,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:39,721 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1866391905, now seen corresponding path program 5 times [2021-01-20 11:32:39,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:39,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379151451] [2021-01-20 11:32:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:39,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379151451] [2021-01-20 11:32:39,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219422244] [2021-01-20 11:32:39,903 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 [2021-01-20 11:32:40,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-20 11:32:40,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:40,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 11:32:40,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:40,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:40,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 11:32:40,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189638416] [2021-01-20 11:32:40,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 11:32:40,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:40,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 11:32:40,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-20 11:32:40,116 INFO L87 Difference]: Start difference. First operand 651 states. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:40,443 INFO L93 Difference]: Finished difference Result 656 states and 1235 transitions. [2021-01-20 11:32:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 11:32:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2021-01-20 11:32:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:40,447 INFO L225 Difference]: With dead ends: 656 [2021-01-20 11:32:40,447 INFO L226 Difference]: Without dead ends: 656 [2021-01-20 11:32:40,448 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-01-20 11:32:40,448 INFO L78 Accepts]: Start accepts. Automaton has 656 states. Word has length 57 [2021-01-20 11:32:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:40,449 INFO L481 AbstractCegarLoop]: Abstraction has 656 states. [2021-01-20 11:32:40,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states. [2021-01-20 11:32:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-20 11:32:40,450 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:40,450 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2021-01-20 11:32:40,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-20 11:32:40,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1165043893, now seen corresponding path program 6 times [2021-01-20 11:32:40,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:40,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586710903] [2021-01-20 11:32:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586710903] [2021-01-20 11:32:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499200202] [2021-01-20 11:32:40,855 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 [2021-01-20 11:32:41,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 11:32:41,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:41,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 11:32:41,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:41,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:41,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 11:32:41,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771780348] [2021-01-20 11:32:41,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 11:32:41,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 11:32:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-20 11:32:41,093 INFO L87 Difference]: Start difference. First operand 656 states. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:41,436 INFO L93 Difference]: Finished difference Result 661 states and 1240 transitions. [2021-01-20 11:32:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 11:32:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2021-01-20 11:32:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:41,451 INFO L225 Difference]: With dead ends: 661 [2021-01-20 11:32:41,451 INFO L226 Difference]: Without dead ends: 661 [2021-01-20 11:32:41,451 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-20 11:32:41,452 INFO L78 Accepts]: Start accepts. Automaton has 661 states. Word has length 62 [2021-01-20 11:32:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:41,453 INFO L481 AbstractCegarLoop]: Abstraction has 661 states. [2021-01-20 11:32:41,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states. [2021-01-20 11:32:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-20 11:32:41,454 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:41,455 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2021-01-20 11:32:41,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:41,672 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash 885128287, now seen corresponding path program 7 times [2021-01-20 11:32:41,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:41,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467723195] [2021-01-20 11:32:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:41,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467723195] [2021-01-20 11:32:41,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093760910] [2021-01-20 11:32:41,939 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 [2021-01-20 11:32:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:42,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 11:32:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:42,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 11:32:42,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069781298] [2021-01-20 11:32:42,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 11:32:42,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 11:32:42,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-20 11:32:42,120 INFO L87 Difference]: Start difference. First operand 661 states. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:42,560 INFO L93 Difference]: Finished difference Result 666 states and 1245 transitions. [2021-01-20 11:32:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 11:32:42,561 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2021-01-20 11:32:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:42,565 INFO L225 Difference]: With dead ends: 666 [2021-01-20 11:32:42,566 INFO L226 Difference]: Without dead ends: 666 [2021-01-20 11:32:42,567 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 11:32:42,567 INFO L78 Accepts]: Start accepts. Automaton has 666 states. Word has length 67 [2021-01-20 11:32:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:42,567 INFO L481 AbstractCegarLoop]: Abstraction has 666 states. [2021-01-20 11:32:42,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states. [2021-01-20 11:32:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-20 11:32:42,568 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:42,569 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2021-01-20 11:32:42,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:42,783 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2011897099, now seen corresponding path program 8 times [2021-01-20 11:32:42,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:42,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489317558] [2021-01-20 11:32:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489317558] [2021-01-20 11:32:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847816418] [2021-01-20 11:32:43,043 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 [2021-01-20 11:32:43,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:32:43,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:43,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 11:32:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:43,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:43,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-20 11:32:43,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177302615] [2021-01-20 11:32:43,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 11:32:43,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:43,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 11:32:43,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-01-20 11:32:43,193 INFO L87 Difference]: Start difference. First operand 666 states. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:43,683 INFO L93 Difference]: Finished difference Result 671 states and 1250 transitions. [2021-01-20 11:32:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 11:32:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 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 [2021-01-20 11:32:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:43,689 INFO L225 Difference]: With dead ends: 671 [2021-01-20 11:32:43,689 INFO L226 Difference]: Without dead ends: 671 [2021-01-20 11:32:43,690 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 11:32:43,690 INFO L78 Accepts]: Start accepts. Automaton has 671 states. Word has length 72 [2021-01-20 11:32:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:43,691 INFO L481 AbstractCegarLoop]: Abstraction has 671 states. [2021-01-20 11:32:43,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states. [2021-01-20 11:32:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-20 11:32:43,694 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:43,694 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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] [2021-01-20 11:32:43,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 11:32:43,908 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -224876001, now seen corresponding path program 9 times [2021-01-20 11:32:43,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:43,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344337408] [2021-01-20 11:32:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:44,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344337408] [2021-01-20 11:32:44,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152195017] [2021-01-20 11:32:44,275 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 [2021-01-20 11:32:44,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 11:32:44,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 11:32:44,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:44,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:44,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 11:32:44,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858730362] [2021-01-20 11:32:44,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 11:32:44,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 11:32:44,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-20 11:32:44,559 INFO L87 Difference]: Start difference. First operand 671 states. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:45,173 INFO L93 Difference]: Finished difference Result 676 states and 1255 transitions. [2021-01-20 11:32:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 11:32:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-01-20 11:32:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:45,178 INFO L225 Difference]: With dead ends: 676 [2021-01-20 11:32:45,178 INFO L226 Difference]: Without dead ends: 676 [2021-01-20 11:32:45,179 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 11:32:45,180 INFO L78 Accepts]: Start accepts. Automaton has 676 states. Word has length 77 [2021-01-20 11:32:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:45,180 INFO L481 AbstractCegarLoop]: Abstraction has 676 states. [2021-01-20 11:32:45,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states. [2021-01-20 11:32:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-20 11:32:45,181 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:45,181 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2021-01-20 11:32:45,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:45,395 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:45,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2114243893, now seen corresponding path program 10 times [2021-01-20 11:32:45,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:45,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169080474] [2021-01-20 11:32:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:45,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169080474] [2021-01-20 11:32:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816982122] [2021-01-20 11:32:45,784 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 [2021-01-20 11:32:45,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:32:45,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:45,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 11:32:45,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:45,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:45,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-20 11:32:45,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469008701] [2021-01-20 11:32:45,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 11:32:45,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:45,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 11:32:45,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-20 11:32:45,972 INFO L87 Difference]: Start difference. First operand 676 states. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:46,553 INFO L93 Difference]: Finished difference Result 681 states and 1260 transitions. [2021-01-20 11:32:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 11:32:46,554 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2021-01-20 11:32:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:46,558 INFO L225 Difference]: With dead ends: 681 [2021-01-20 11:32:46,558 INFO L226 Difference]: Without dead ends: 681 [2021-01-20 11:32:46,560 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 11:32:46,560 INFO L78 Accepts]: Start accepts. Automaton has 681 states. Word has length 82 [2021-01-20 11:32:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:46,560 INFO L481 AbstractCegarLoop]: Abstraction has 681 states. [2021-01-20 11:32:46,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states. [2021-01-20 11:32:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-20 11:32:46,561 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:46,561 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2021-01-20 11:32:46,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:46,775 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 356591583, now seen corresponding path program 11 times [2021-01-20 11:32:46,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:46,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466360466] [2021-01-20 11:32:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:47,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466360466] [2021-01-20 11:32:47,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677841360] [2021-01-20 11:32:47,206 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 [2021-01-20 11:32:47,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-20 11:32:47,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 11:32:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:47,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:47,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-01-20 11:32:47,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142305050] [2021-01-20 11:32:47,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-20 11:32:47,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-20 11:32:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-01-20 11:32:47,412 INFO L87 Difference]: Start difference. First operand 681 states. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:48,152 INFO L93 Difference]: Finished difference Result 686 states and 1265 transitions. [2021-01-20 11:32:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 11:32:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2021-01-20 11:32:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:48,157 INFO L225 Difference]: With dead ends: 686 [2021-01-20 11:32:48,157 INFO L226 Difference]: Without dead ends: 686 [2021-01-20 11:32:48,158 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 11:32:48,159 INFO L78 Accepts]: Start accepts. Automaton has 686 states. Word has length 87 [2021-01-20 11:32:48,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:48,159 INFO L481 AbstractCegarLoop]: Abstraction has 686 states. [2021-01-20 11:32:48,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states. [2021-01-20 11:32:48,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-01-20 11:32:48,160 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:48,160 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2021-01-20 11:32:48,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-20 11:32:48,373 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1506076533, now seen corresponding path program 12 times [2021-01-20 11:32:48,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:48,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327264539] [2021-01-20 11:32:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:48,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327264539] [2021-01-20 11:32:48,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981789380] [2021-01-20 11:32:48,906 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 [2021-01-20 11:32:49,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-20 11:32:49,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:49,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 11:32:49,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:49,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:49,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-20 11:32:49,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534182290] [2021-01-20 11:32:49,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-20 11:32:49,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:49,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-20 11:32:49,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-20 11:32:49,348 INFO L87 Difference]: Start difference. First operand 686 states. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:50,198 INFO L93 Difference]: Finished difference Result 691 states and 1270 transitions. [2021-01-20 11:32:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 11:32:50,199 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-01-20 11:32:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:50,203 INFO L225 Difference]: With dead ends: 691 [2021-01-20 11:32:50,203 INFO L226 Difference]: Without dead ends: 691 [2021-01-20 11:32:50,205 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 11:32:50,205 INFO L78 Accepts]: Start accepts. Automaton has 691 states. Word has length 92 [2021-01-20 11:32:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:50,206 INFO L481 AbstractCegarLoop]: Abstraction has 691 states. [2021-01-20 11:32:50,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states. [2021-01-20 11:32:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-20 11:32:50,207 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:50,207 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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] [2021-01-20 11:32:50,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 11:32:50,422 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1555527071, now seen corresponding path program 13 times [2021-01-20 11:32:50,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:50,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839224521] [2021-01-20 11:32:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:50,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839224521] [2021-01-20 11:32:50,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869914483] [2021-01-20 11:32:50,936 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 [2021-01-20 11:32:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:51,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 11:32:51,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:51,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:51,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-20 11:32:51,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502128893] [2021-01-20 11:32:51,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-20 11:32:51,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-20 11:32:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 11:32:51,107 INFO L87 Difference]: Start difference. First operand 691 states. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:52,061 INFO L93 Difference]: Finished difference Result 696 states and 1275 transitions. [2021-01-20 11:32:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 11:32:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-01-20 11:32:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:52,066 INFO L225 Difference]: With dead ends: 696 [2021-01-20 11:32:52,067 INFO L226 Difference]: Without dead ends: 696 [2021-01-20 11:32:52,070 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 11:32:52,071 INFO L78 Accepts]: Start accepts. Automaton has 696 states. Word has length 97 [2021-01-20 11:32:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:52,071 INFO L481 AbstractCegarLoop]: Abstraction has 696 states. [2021-01-20 11:32:52,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states. [2021-01-20 11:32:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-20 11:32:52,075 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:52,075 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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] [2021-01-20 11:32:52,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 11:32:52,289 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:52,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash -119983691, now seen corresponding path program 14 times [2021-01-20 11:32:52,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:52,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3660963] [2021-01-20 11:32:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3660963] [2021-01-20 11:32:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576744397] [2021-01-20 11:32:52,836 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 [2021-01-20 11:32:52,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:32:52,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:52,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-20 11:32:52,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:52,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:52,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-01-20 11:32:52,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611697765] [2021-01-20 11:32:52,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-20 11:32:52,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:52,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-20 11:32:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 11:32:52,994 INFO L87 Difference]: Start difference. First operand 696 states. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:54,125 INFO L93 Difference]: Finished difference Result 701 states and 1280 transitions. [2021-01-20 11:32:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-20 11:32:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2021-01-20 11:32:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:54,129 INFO L225 Difference]: With dead ends: 701 [2021-01-20 11:32:54,130 INFO L226 Difference]: Without dead ends: 701 [2021-01-20 11:32:54,131 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-01-20 11:32:54,131 INFO L78 Accepts]: Start accepts. Automaton has 701 states. Word has length 102 [2021-01-20 11:32:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:54,132 INFO L481 AbstractCegarLoop]: Abstraction has 701 states. [2021-01-20 11:32:54,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states. [2021-01-20 11:32:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-20 11:32:54,133 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:54,133 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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] [2021-01-20 11:32:54,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:32:54,347 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:54,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1107848353, now seen corresponding path program 15 times [2021-01-20 11:32:54,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:54,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590485219] [2021-01-20 11:32:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:54,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590485219] [2021-01-20 11:32:54,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59279647] [2021-01-20 11:32:54,976 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 [2021-01-20 11:32:55,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-20 11:32:55,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:55,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 11:32:55,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:55,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:55,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-20 11:32:55,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731597356] [2021-01-20 11:32:55,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-20 11:32:55,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:55,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-20 11:32:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 11:32:55,575 INFO L87 Difference]: Start difference. First operand 701 states. Second operand has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:56,781 INFO L93 Difference]: Finished difference Result 706 states and 1285 transitions. [2021-01-20 11:32:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 11:32:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2021-01-20 11:32:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:56,789 INFO L225 Difference]: With dead ends: 706 [2021-01-20 11:32:56,789 INFO L226 Difference]: Without dead ends: 706 [2021-01-20 11:32:56,791 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 11:32:56,791 INFO L78 Accepts]: Start accepts. Automaton has 706 states. Word has length 107 [2021-01-20 11:32:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:56,791 INFO L481 AbstractCegarLoop]: Abstraction has 706 states. [2021-01-20 11:32:56,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2021-01-20 11:32:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-20 11:32:56,793 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:56,793 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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] [2021-01-20 11:32:57,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-20 11:32:57,009 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:57,010 INFO L82 PathProgramCache]: Analyzing trace with hash 600157173, now seen corresponding path program 16 times [2021-01-20 11:32:57,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192224832] [2021-01-20 11:32:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:32:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:57,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192224832] [2021-01-20 11:32:57,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769115873] [2021-01-20 11:32:57,698 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 [2021-01-20 11:32:57,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:32:57,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:32:57,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-20 11:32:57,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:32:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:32:57,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:32:57,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-01-20 11:32:57,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029108770] [2021-01-20 11:32:57,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-20 11:32:57,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:32:57,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-20 11:32:57,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 11:32:57,904 INFO L87 Difference]: Start difference. First operand 706 states. Second operand has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:32:59,085 INFO L93 Difference]: Finished difference Result 711 states and 1290 transitions. [2021-01-20 11:32:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-20 11:32:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 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 [2021-01-20 11:32:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:32:59,088 INFO L225 Difference]: With dead ends: 711 [2021-01-20 11:32:59,089 INFO L226 Difference]: Without dead ends: 711 [2021-01-20 11:32:59,090 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 11:32:59,090 INFO L78 Accepts]: Start accepts. Automaton has 711 states. Word has length 112 [2021-01-20 11:32:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:32:59,091 INFO L481 AbstractCegarLoop]: Abstraction has 711 states. [2021-01-20 11:32:59,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:32:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states. [2021-01-20 11:32:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-20 11:32:59,092 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:32:59,092 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 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] [2021-01-20 11:32:59,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 11:32:59,303 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:32:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:32:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 587039007, now seen corresponding path program 17 times [2021-01-20 11:32:59,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:32:59,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44648316] [2021-01-20 11:32:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:32:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:00,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44648316] [2021-01-20 11:33:00,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589614237] [2021-01-20 11:33:00,012 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 [2021-01-20 11:33:00,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-20 11:33:00,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:00,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-20 11:33:00,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:00,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:00,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-01-20 11:33:00,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591343204] [2021-01-20 11:33:00,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-20 11:33:00,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:00,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-20 11:33:00,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 11:33:00,405 INFO L87 Difference]: Start difference. First operand 711 states. Second operand has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:01,888 INFO L93 Difference]: Finished difference Result 716 states and 1295 transitions. [2021-01-20 11:33:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-20 11:33:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-01-20 11:33:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:01,892 INFO L225 Difference]: With dead ends: 716 [2021-01-20 11:33:01,892 INFO L226 Difference]: Without dead ends: 716 [2021-01-20 11:33:01,893 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-01-20 11:33:01,893 INFO L78 Accepts]: Start accepts. Automaton has 716 states. Word has length 117 [2021-01-20 11:33:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:01,893 INFO L481 AbstractCegarLoop]: Abstraction has 716 states. [2021-01-20 11:33:01,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2021-01-20 11:33:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-20 11:33:01,895 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:01,895 INFO L504 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 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] [2021-01-20 11:33:02,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:33:02,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash -837921227, now seen corresponding path program 18 times [2021-01-20 11:33:02,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:02,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319738319] [2021-01-20 11:33:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:03,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319738319] [2021-01-20 11:33:03,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259938053] [2021-01-20 11:33:03,024 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 [2021-01-20 11:33:04,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-20 11:33:04,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:04,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-20 11:33:04,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:04,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:04,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-01-20 11:33:04,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61997127] [2021-01-20 11:33:04,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-20 11:33:04,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-20 11:33:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 11:33:04,464 INFO L87 Difference]: Start difference. First operand 716 states. Second operand has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:05,951 INFO L93 Difference]: Finished difference Result 721 states and 1300 transitions. [2021-01-20 11:33:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-20 11:33:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2021-01-20 11:33:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:05,955 INFO L225 Difference]: With dead ends: 721 [2021-01-20 11:33:05,955 INFO L226 Difference]: Without dead ends: 721 [2021-01-20 11:33:05,957 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-01-20 11:33:05,957 INFO L78 Accepts]: Start accepts. Automaton has 721 states. Word has length 122 [2021-01-20 11:33:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:05,958 INFO L481 AbstractCegarLoop]: Abstraction has 721 states. [2021-01-20 11:33:05,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states. [2021-01-20 11:33:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-01-20 11:33:05,959 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:05,959 INFO L504 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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] [2021-01-20 11:33:06,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:33:06,174 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash 717569759, now seen corresponding path program 19 times [2021-01-20 11:33:06,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:06,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935280633] [2021-01-20 11:33:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935280633] [2021-01-20 11:33:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455785299] [2021-01-20 11:33:07,084 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 [2021-01-20 11:33:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:07,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-20 11:33:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:07,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:07,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-01-20 11:33:07,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076981144] [2021-01-20 11:33:07,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-20 11:33:07,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-20 11:33:07,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-01-20 11:33:07,282 INFO L87 Difference]: Start difference. First operand 721 states. Second operand has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:08,992 INFO L93 Difference]: Finished difference Result 726 states and 1305 transitions. [2021-01-20 11:33:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-20 11:33:08,993 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 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 [2021-01-20 11:33:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:08,996 INFO L225 Difference]: With dead ends: 726 [2021-01-20 11:33:08,996 INFO L226 Difference]: Without dead ends: 726 [2021-01-20 11:33:09,000 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-01-20 11:33:09,001 INFO L78 Accepts]: Start accepts. Automaton has 726 states. Word has length 127 [2021-01-20 11:33:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:09,001 INFO L481 AbstractCegarLoop]: Abstraction has 726 states. [2021-01-20 11:33:09,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2021-01-20 11:33:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-01-20 11:33:09,003 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:09,003 INFO L504 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 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] [2021-01-20 11:33:09,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:33:09,219 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1446457461, now seen corresponding path program 20 times [2021-01-20 11:33:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:09,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919014809] [2021-01-20 11:33:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:10,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919014809] [2021-01-20 11:33:10,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267322685] [2021-01-20 11:33:10,314 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 [2021-01-20 11:33:10,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:33:10,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:10,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-20 11:33:10,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:10,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:10,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-01-20 11:33:10,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287527509] [2021-01-20 11:33:10,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-20 11:33:10,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:10,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-20 11:33:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 11:33:10,533 INFO L87 Difference]: Start difference. First operand 726 states. Second operand has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:12,292 INFO L93 Difference]: Finished difference Result 731 states and 1310 transitions. [2021-01-20 11:33:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-01-20 11:33:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 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 [2021-01-20 11:33:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:12,296 INFO L225 Difference]: With dead ends: 731 [2021-01-20 11:33:12,296 INFO L226 Difference]: Without dead ends: 731 [2021-01-20 11:33:12,297 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2021-01-20 11:33:12,297 INFO L78 Accepts]: Start accepts. Automaton has 731 states. Word has length 132 [2021-01-20 11:33:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:12,297 INFO L481 AbstractCegarLoop]: Abstraction has 731 states. [2021-01-20 11:33:12,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:12,297 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-01-20 11:33:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-01-20 11:33:12,298 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:12,299 INFO L504 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 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] [2021-01-20 11:33:12,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-20 11:33:12,513 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash -380973921, now seen corresponding path program 21 times [2021-01-20 11:33:12,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:12,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594610180] [2021-01-20 11:33:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:13,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594610180] [2021-01-20 11:33:13,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298040103] [2021-01-20 11:33:13,598 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 [2021-01-20 11:33:15,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-01-20 11:33:15,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-20 11:33:15,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:15,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:15,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-01-20 11:33:15,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853569287] [2021-01-20 11:33:15,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-20 11:33:15,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-20 11:33:15,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 11:33:15,514 INFO L87 Difference]: Start difference. First operand 731 states. Second operand has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:17,584 INFO L93 Difference]: Finished difference Result 736 states and 1315 transitions. [2021-01-20 11:33:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-01-20 11:33:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 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 [2021-01-20 11:33:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:17,592 INFO L225 Difference]: With dead ends: 736 [2021-01-20 11:33:17,592 INFO L226 Difference]: Without dead ends: 736 [2021-01-20 11:33:17,593 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2021-01-20 11:33:17,593 INFO L78 Accepts]: Start accepts. Automaton has 736 states. Word has length 137 [2021-01-20 11:33:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:17,594 INFO L481 AbstractCegarLoop]: Abstraction has 736 states. [2021-01-20 11:33:17,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states. [2021-01-20 11:33:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-01-20 11:33:17,596 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:17,596 INFO L504 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 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] [2021-01-20 11:33:17,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-20 11:33:17,812 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:17,812 INFO L82 PathProgramCache]: Analyzing trace with hash -976995659, now seen corresponding path program 22 times [2021-01-20 11:33:17,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:17,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542300592] [2021-01-20 11:33:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:19,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542300592] [2021-01-20 11:33:19,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315354321] [2021-01-20 11:33:19,047 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 [2021-01-20 11:33:19,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:33:19,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:19,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-20 11:33:19,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:19,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:19,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-01-20 11:33:19,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683851915] [2021-01-20 11:33:19,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-20 11:33:19,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:19,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-20 11:33:19,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 11:33:19,293 INFO L87 Difference]: Start difference. First operand 736 states. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:21,422 INFO L93 Difference]: Finished difference Result 741 states and 1320 transitions. [2021-01-20 11:33:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-01-20 11:33:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 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 [2021-01-20 11:33:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:21,425 INFO L225 Difference]: With dead ends: 741 [2021-01-20 11:33:21,425 INFO L226 Difference]: Without dead ends: 741 [2021-01-20 11:33:21,426 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2021-01-20 11:33:21,426 INFO L78 Accepts]: Start accepts. Automaton has 741 states. Word has length 142 [2021-01-20 11:33:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:21,426 INFO L481 AbstractCegarLoop]: Abstraction has 741 states. [2021-01-20 11:33:21,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states. [2021-01-20 11:33:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-01-20 11:33:21,427 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:21,427 INFO L504 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 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] [2021-01-20 11:33:21,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:33:21,633 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1484117409, now seen corresponding path program 23 times [2021-01-20 11:33:21,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:21,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020067038] [2021-01-20 11:33:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:22,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020067038] [2021-01-20 11:33:22,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977594714] [2021-01-20 11:33:22,988 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 [2021-01-20 11:33:23,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-01-20 11:33:23,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-20 11:33:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:23,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:23,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-01-20 11:33:23,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094800453] [2021-01-20 11:33:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-20 11:33:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-20 11:33:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 11:33:23,753 INFO L87 Difference]: Start difference. First operand 741 states. Second operand has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:26,148 INFO L93 Difference]: Finished difference Result 746 states and 1325 transitions. [2021-01-20 11:33:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-01-20 11:33:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 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 [2021-01-20 11:33:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:26,152 INFO L225 Difference]: With dead ends: 746 [2021-01-20 11:33:26,152 INFO L226 Difference]: Without dead ends: 746 [2021-01-20 11:33:26,153 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2021-01-20 11:33:26,153 INFO L78 Accepts]: Start accepts. Automaton has 746 states. Word has length 147 [2021-01-20 11:33:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:26,153 INFO L481 AbstractCegarLoop]: Abstraction has 746 states. [2021-01-20 11:33:26,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states. [2021-01-20 11:33:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-01-20 11:33:26,154 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:26,155 INFO L504 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 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] [2021-01-20 11:33:26,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-20 11:33:26,365 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:26,366 INFO L82 PathProgramCache]: Analyzing trace with hash 288978165, now seen corresponding path program 24 times [2021-01-20 11:33:26,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:26,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060464114] [2021-01-20 11:33:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:27,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060464114] [2021-01-20 11:33:27,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586988915] [2021-01-20 11:33:27,787 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 [2021-01-20 11:33:37,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-20 11:33:37,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:37,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-20 11:33:37,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:37,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:37,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-01-20 11:33:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791547173] [2021-01-20 11:33:37,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-20 11:33:37,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:37,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-20 11:33:37,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 11:33:37,186 INFO L87 Difference]: Start difference. First operand 746 states. Second operand has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:39,868 INFO L93 Difference]: Finished difference Result 751 states and 1330 transitions. [2021-01-20 11:33:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-01-20 11:33:39,869 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 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 [2021-01-20 11:33:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:39,872 INFO L225 Difference]: With dead ends: 751 [2021-01-20 11:33:39,873 INFO L226 Difference]: Without dead ends: 751 [2021-01-20 11:33:39,874 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2021-01-20 11:33:39,874 INFO L78 Accepts]: Start accepts. Automaton has 751 states. Word has length 152 [2021-01-20 11:33:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:39,875 INFO L481 AbstractCegarLoop]: Abstraction has 751 states. [2021-01-20 11:33:39,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states. [2021-01-20 11:33:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-20 11:33:39,876 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:39,876 INFO L504 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 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] [2021-01-20 11:33:40,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:33:40,092 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:40,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:40,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1551935457, now seen corresponding path program 25 times [2021-01-20 11:33:40,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:40,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949959094] [2021-01-20 11:33:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:41,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949959094] [2021-01-20 11:33:41,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345741939] [2021-01-20 11:33:41,690 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 [2021-01-20 11:33:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:41,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-20 11:33:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:41,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:41,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-01-20 11:33:41,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727558067] [2021-01-20 11:33:41,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-20 11:33:41,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:41,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-20 11:33:41,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 11:33:41,947 INFO L87 Difference]: Start difference. First operand 751 states. Second operand has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:44,707 INFO L93 Difference]: Finished difference Result 756 states and 1335 transitions. [2021-01-20 11:33:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-01-20 11:33:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 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 [2021-01-20 11:33:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:44,711 INFO L225 Difference]: With dead ends: 756 [2021-01-20 11:33:44,711 INFO L226 Difference]: Without dead ends: 756 [2021-01-20 11:33:44,712 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2021-01-20 11:33:44,712 INFO L78 Accepts]: Start accepts. Automaton has 756 states. Word has length 157 [2021-01-20 11:33:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:44,713 INFO L481 AbstractCegarLoop]: Abstraction has 756 states. [2021-01-20 11:33:44,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states. [2021-01-20 11:33:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-01-20 11:33:44,714 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:44,714 INFO L504 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 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] [2021-01-20 11:33:44,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-20 11:33:44,915 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:44,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1478156085, now seen corresponding path program 26 times [2021-01-20 11:33:44,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:44,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726695959] [2021-01-20 11:33:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:46,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726695959] [2021-01-20 11:33:46,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352599165] [2021-01-20 11:33:46,680 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 [2021-01-20 11:33:46,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:33:46,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:46,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-20 11:33:46,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:46,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:46,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-01-20 11:33:46,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864667254] [2021-01-20 11:33:46,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-20 11:33:46,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-20 11:33:46,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 11:33:46,911 INFO L87 Difference]: Start difference. First operand 756 states. Second operand has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:49,834 INFO L93 Difference]: Finished difference Result 761 states and 1340 transitions. [2021-01-20 11:33:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-01-20 11:33:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 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 [2021-01-20 11:33:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:49,837 INFO L225 Difference]: With dead ends: 761 [2021-01-20 11:33:49,837 INFO L226 Difference]: Without dead ends: 761 [2021-01-20 11:33:49,838 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2021-01-20 11:33:49,838 INFO L78 Accepts]: Start accepts. Automaton has 761 states. Word has length 162 [2021-01-20 11:33:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:49,838 INFO L481 AbstractCegarLoop]: Abstraction has 761 states. [2021-01-20 11:33:49,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2021-01-20 11:33:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-01-20 11:33:49,840 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:49,840 INFO L504 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 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] [2021-01-20 11:33:50,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-20 11:33:50,050 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:50,051 INFO L82 PathProgramCache]: Analyzing trace with hash -802794017, now seen corresponding path program 27 times [2021-01-20 11:33:50,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:50,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128477132] [2021-01-20 11:33:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:33:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:51,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128477132] [2021-01-20 11:33:51,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005616244] [2021-01-20 11:33:51,899 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 [2021-01-20 11:33:56,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-01-20 11:33:56,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:33:56,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-20 11:33:56,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:33:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:33:56,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:33:56,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-01-20 11:33:56,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314298312] [2021-01-20 11:33:56,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-20 11:33:56,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:33:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-20 11:33:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-01-20 11:33:56,292 INFO L87 Difference]: Start difference. First operand 761 states. Second operand has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:33:59,615 INFO L93 Difference]: Finished difference Result 766 states and 1345 transitions. [2021-01-20 11:33:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-01-20 11:33:59,621 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 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 [2021-01-20 11:33:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:33:59,625 INFO L225 Difference]: With dead ends: 766 [2021-01-20 11:33:59,625 INFO L226 Difference]: Without dead ends: 766 [2021-01-20 11:33:59,626 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2021-01-20 11:33:59,626 INFO L78 Accepts]: Start accepts. Automaton has 766 states. Word has length 167 [2021-01-20 11:33:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:33:59,627 INFO L481 AbstractCegarLoop]: Abstraction has 766 states. [2021-01-20 11:33:59,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:33:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2021-01-20 11:33:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-20 11:33:59,628 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:33:59,628 INFO L504 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 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] [2021-01-20 11:33:59,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-20 11:33:59,833 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:33:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:33:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash 619477365, now seen corresponding path program 28 times [2021-01-20 11:33:59,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:33:59,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430559717] [2021-01-20 11:33:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:33:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:34:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:01,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430559717] [2021-01-20 11:34:01,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362946489] [2021-01-20 11:34:01,910 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 [2021-01-20 11:34:02,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:34:02,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:34:02,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-20 11:34:02,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:34:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:02,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:34:02,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-01-20 11:34:02,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139364659] [2021-01-20 11:34:02,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-20 11:34:02,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:34:02,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-20 11:34:02,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2021-01-20 11:34:02,149 INFO L87 Difference]: Start difference. First operand 766 states. Second operand has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:34:05,552 INFO L93 Difference]: Finished difference Result 771 states and 1350 transitions. [2021-01-20 11:34:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-01-20 11:34:05,552 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 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 [2021-01-20 11:34:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:34:05,556 INFO L225 Difference]: With dead ends: 771 [2021-01-20 11:34:05,557 INFO L226 Difference]: Without dead ends: 771 [2021-01-20 11:34:05,558 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2021-01-20 11:34:05,558 INFO L78 Accepts]: Start accepts. Automaton has 771 states. Word has length 172 [2021-01-20 11:34:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:34:05,559 INFO L481 AbstractCegarLoop]: Abstraction has 771 states. [2021-01-20 11:34:05,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2021-01-20 11:34:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-01-20 11:34:05,560 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:34:05,561 INFO L504 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 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] [2021-01-20 11:34:05,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:34:05,771 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:34:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:34:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1787092065, now seen corresponding path program 29 times [2021-01-20 11:34:05,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:34:05,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213495097] [2021-01-20 11:34:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:34:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:34:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:07,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213495097] [2021-01-20 11:34:07,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370373772] [2021-01-20 11:34:07,941 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 [2021-01-20 11:34:09,921 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-20 11:34:09,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:34:09,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-20 11:34:09,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:34:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:10,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:34:10,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-01-20 11:34:10,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697880992] [2021-01-20 11:34:10,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-20 11:34:10,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:34:10,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-20 11:34:10,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2021-01-20 11:34:10,055 INFO L87 Difference]: Start difference. First operand 771 states. Second operand has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:34:13,565 INFO L93 Difference]: Finished difference Result 776 states and 1355 transitions. [2021-01-20 11:34:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-01-20 11:34:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 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 [2021-01-20 11:34:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:34:13,570 INFO L225 Difference]: With dead ends: 776 [2021-01-20 11:34:13,570 INFO L226 Difference]: Without dead ends: 776 [2021-01-20 11:34:13,571 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2021-01-20 11:34:13,571 INFO L78 Accepts]: Start accepts. Automaton has 776 states. Word has length 177 [2021-01-20 11:34:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:34:13,572 INFO L481 AbstractCegarLoop]: Abstraction has 776 states. [2021-01-20 11:34:13,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states. [2021-01-20 11:34:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-01-20 11:34:13,573 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:34:13,573 INFO L504 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 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] [2021-01-20 11:34:13,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-20 11:34:13,788 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:34:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:34:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1389214795, now seen corresponding path program 30 times [2021-01-20 11:34:13,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:34:13,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862134529] [2021-01-20 11:34:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:34:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:34:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:16,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862134529] [2021-01-20 11:34:16,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724622608] [2021-01-20 11:34:16,091 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 [2021-01-20 11:34:47,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-01-20 11:34:47,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:34:47,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-20 11:34:47,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:34:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:47,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:34:47,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-01-20 11:34:47,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825820409] [2021-01-20 11:34:47,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-20 11:34:47,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:34:47,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-20 11:34:47,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 11:34:47,542 INFO L87 Difference]: Start difference. First operand 776 states. Second operand has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:34:51,614 INFO L93 Difference]: Finished difference Result 781 states and 1360 transitions. [2021-01-20 11:34:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-01-20 11:34:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 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 [2021-01-20 11:34:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:34:51,619 INFO L225 Difference]: With dead ends: 781 [2021-01-20 11:34:51,619 INFO L226 Difference]: Without dead ends: 781 [2021-01-20 11:34:51,620 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2021-01-20 11:34:51,621 INFO L78 Accepts]: Start accepts. Automaton has 781 states. Word has length 182 [2021-01-20 11:34:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:34:51,621 INFO L481 AbstractCegarLoop]: Abstraction has 781 states. [2021-01-20 11:34:51,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states. [2021-01-20 11:34:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-01-20 11:34:51,622 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:34:51,623 INFO L504 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 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] [2021-01-20 11:34:51,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:34:51,836 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:34:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:34:51,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1871068833, now seen corresponding path program 31 times [2021-01-20 11:34:51,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:34:51,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498576479] [2021-01-20 11:34:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:34:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:34:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498576479] [2021-01-20 11:34:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108258799] [2021-01-20 11:34:54,425 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 [2021-01-20 11:34:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:34:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-20 11:34:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:34:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:34:54,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:34:54,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-01-20 11:34:54,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17577804] [2021-01-20 11:34:54,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-01-20 11:34:54,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:34:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-01-20 11:34:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2021-01-20 11:34:54,674 INFO L87 Difference]: Start difference. First operand 781 states. Second operand has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:34:59,034 INFO L93 Difference]: Finished difference Result 786 states and 1365 transitions. [2021-01-20 11:34:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-01-20 11:34:59,035 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 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 [2021-01-20 11:34:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:34:59,038 INFO L225 Difference]: With dead ends: 786 [2021-01-20 11:34:59,038 INFO L226 Difference]: Without dead ends: 786 [2021-01-20 11:34:59,040 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2021-01-20 11:34:59,040 INFO L78 Accepts]: Start accepts. Automaton has 786 states. Word has length 187 [2021-01-20 11:34:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:34:59,040 INFO L481 AbstractCegarLoop]: Abstraction has 786 states. [2021-01-20 11:34:59,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:34:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states. [2021-01-20 11:34:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-20 11:34:59,042 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:34:59,042 INFO L504 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 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] [2021-01-20 11:34:59,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-20 11:34:59,250 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:34:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:34:59,250 INFO L82 PathProgramCache]: Analyzing trace with hash 292568565, now seen corresponding path program 32 times [2021-01-20 11:34:59,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:34:59,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143185394] [2021-01-20 11:34:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:34:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:35:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143185394] [2021-01-20 11:35:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667253704] [2021-01-20 11:35:01,935 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 [2021-01-20 11:35:02,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:35:02,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:35:02,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-20 11:35:02,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:35:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:02,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:35:02,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-01-20 11:35:02,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239985850] [2021-01-20 11:35:02,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-01-20 11:35:02,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:35:02,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-01-20 11:35:02,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 11:35:02,241 INFO L87 Difference]: Start difference. First operand 786 states. Second operand has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:35:07,052 INFO L93 Difference]: Finished difference Result 791 states and 1370 transitions. [2021-01-20 11:35:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-01-20 11:35:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-01-20 11:35:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:35:07,055 INFO L225 Difference]: With dead ends: 791 [2021-01-20 11:35:07,055 INFO L226 Difference]: Without dead ends: 791 [2021-01-20 11:35:07,056 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2021-01-20 11:35:07,056 INFO L78 Accepts]: Start accepts. Automaton has 791 states. Word has length 192 [2021-01-20 11:35:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:35:07,057 INFO L481 AbstractCegarLoop]: Abstraction has 791 states. [2021-01-20 11:35:07,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2021-01-20 11:35:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-01-20 11:35:07,059 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:35:07,059 INFO L504 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 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] [2021-01-20 11:35:07,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-20 11:35:07,260 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:35:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:35:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1394487071, now seen corresponding path program 33 times [2021-01-20 11:35:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:35:07,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902246580] [2021-01-20 11:35:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:35:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:35:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:10,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902246580] [2021-01-20 11:35:10,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204144357] [2021-01-20 11:35:10,189 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 [2021-01-20 11:35:40,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-01-20 11:35:40,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:35:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-20 11:35:40,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:35:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:40,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:35:40,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-01-20 11:35:40,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979408145] [2021-01-20 11:35:40,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-01-20 11:35:40,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:35:40,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-01-20 11:35:40,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2021-01-20 11:35:40,880 INFO L87 Difference]: Start difference. First operand 791 states. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:35:46,042 INFO L93 Difference]: Finished difference Result 796 states and 1375 transitions. [2021-01-20 11:35:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-01-20 11:35:46,043 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 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 [2021-01-20 11:35:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:35:46,044 INFO L225 Difference]: With dead ends: 796 [2021-01-20 11:35:46,044 INFO L226 Difference]: Without dead ends: 796 [2021-01-20 11:35:46,045 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5852, Invalid=12780, Unknown=0, NotChecked=0, Total=18632 [2021-01-20 11:35:46,046 INFO L78 Accepts]: Start accepts. Automaton has 796 states. Word has length 197 [2021-01-20 11:35:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:35:46,046 INFO L481 AbstractCegarLoop]: Abstraction has 796 states. [2021-01-20 11:35:46,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2021-01-20 11:35:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-20 11:35:46,047 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:35:46,047 INFO L504 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 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] [2021-01-20 11:35:46,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-20 11:35:46,262 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:35:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:35:46,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1658165195, now seen corresponding path program 34 times [2021-01-20 11:35:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:35:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304929590] [2021-01-20 11:35:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:35:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:35:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:49,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304929590] [2021-01-20 11:35:49,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131301944] [2021-01-20 11:35:49,374 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 [2021-01-20 11:35:49,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:35:49,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:35:49,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-20 11:35:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:35:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:49,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:35:49,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-01-20 11:35:49,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629240692] [2021-01-20 11:35:49,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-01-20 11:35:49,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:35:49,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-01-20 11:35:49,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-01-20 11:35:49,688 INFO L87 Difference]: Start difference. First operand 796 states. Second operand has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:35:54,868 INFO L93 Difference]: Finished difference Result 801 states and 1380 transitions. [2021-01-20 11:35:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-01-20 11:35:54,869 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 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 [2021-01-20 11:35:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:35:54,870 INFO L225 Difference]: With dead ends: 801 [2021-01-20 11:35:54,870 INFO L226 Difference]: Without dead ends: 801 [2021-01-20 11:35:54,872 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2021-01-20 11:35:54,872 INFO L78 Accepts]: Start accepts. Automaton has 801 states. Word has length 202 [2021-01-20 11:35:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:35:54,872 INFO L481 AbstractCegarLoop]: Abstraction has 801 states. [2021-01-20 11:35:54,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:35:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states. [2021-01-20 11:35:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-01-20 11:35:54,874 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:35:54,874 INFO L504 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 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] [2021-01-20 11:35:55,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-20 11:35:55,090 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:35:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:35:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash 610561247, now seen corresponding path program 35 times [2021-01-20 11:35:55,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:35:55,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508206714] [2021-01-20 11:35:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:35:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:35:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:35:58,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508206714] [2021-01-20 11:35:58,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166925985] [2021-01-20 11:35:58,588 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 [2021-01-20 11:36:33,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-01-20 11:36:33,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:36:33,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-20 11:36:33,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:36:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:36:33,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:36:33,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-01-20 11:36:33,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445682444] [2021-01-20 11:36:33,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-01-20 11:36:33,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:36:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-01-20 11:36:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2021-01-20 11:36:33,760 INFO L87 Difference]: Start difference. First operand 801 states. Second operand has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:36:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:36:39,599 INFO L93 Difference]: Finished difference Result 806 states and 1385 transitions. [2021-01-20 11:36:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-01-20 11:36:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 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 [2021-01-20 11:36:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:36:39,601 INFO L225 Difference]: With dead ends: 806 [2021-01-20 11:36:39,601 INFO L226 Difference]: Without dead ends: 806 [2021-01-20 11:36:39,602 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=6556, Invalid=14324, Unknown=0, NotChecked=0, Total=20880 [2021-01-20 11:36:39,602 INFO L78 Accepts]: Start accepts. Automaton has 806 states. Word has length 207 [2021-01-20 11:36:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:36:39,603 INFO L481 AbstractCegarLoop]: Abstraction has 806 states. [2021-01-20 11:36:39,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:36:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states. [2021-01-20 11:36:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-01-20 11:36:39,604 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:36:39,604 INFO L504 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 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] [2021-01-20 11:36:39,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-20 11:36:39,805 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:36:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:36:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash 115655285, now seen corresponding path program 36 times [2021-01-20 11:36:39,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:36:39,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625210208] [2021-01-20 11:36:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:36:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:36:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:36:43,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625210208] [2021-01-20 11:36:43,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971500205] [2021-01-20 11:36:43,511 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 [2021-01-20 11:37:31,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-01-20 11:37:31,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:37:32,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-20 11:37:32,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:37:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:37:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:37:32,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-01-20 11:37:32,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602771115] [2021-01-20 11:37:32,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-01-20 11:37:32,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:37:32,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-01-20 11:37:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2021-01-20 11:37:32,405 INFO L87 Difference]: Start difference. First operand 806 states. Second operand has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:37:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:37:38,839 INFO L93 Difference]: Finished difference Result 811 states and 1390 transitions. [2021-01-20 11:37:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-01-20 11:37:38,840 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 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 [2021-01-20 11:37:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:37:38,841 INFO L225 Difference]: With dead ends: 811 [2021-01-20 11:37:38,841 INFO L226 Difference]: Without dead ends: 811 [2021-01-20 11:37:38,843 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=6923, Invalid=15129, Unknown=0, NotChecked=0, Total=22052 [2021-01-20 11:37:38,843 INFO L78 Accepts]: Start accepts. Automaton has 811 states. Word has length 212 [2021-01-20 11:37:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:37:38,844 INFO L481 AbstractCegarLoop]: Abstraction has 811 states. [2021-01-20 11:37:38,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:37:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states. [2021-01-20 11:37:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-01-20 11:37:38,846 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:37:38,846 INFO L504 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 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] [2021-01-20 11:37:39,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-20 11:37:39,058 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:37:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:37:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1068991841, now seen corresponding path program 37 times [2021-01-20 11:37:39,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:37:39,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909463203] [2021-01-20 11:37:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:37:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:37:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:37:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909463203] [2021-01-20 11:37:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976983290] [2021-01-20 11:37:43,202 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 [2021-01-20 11:37:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:37:43,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2021-01-20 11:37:43,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:37:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:37:43,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:37:43,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-01-20 11:37:43,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950299341] [2021-01-20 11:37:43,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-01-20 11:37:43,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:37:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-01-20 11:37:43,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2021-01-20 11:37:43,545 INFO L87 Difference]: Start difference. First operand 811 states. Second operand has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:37:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:37:50,324 INFO L93 Difference]: Finished difference Result 816 states and 1395 transitions. [2021-01-20 11:37:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-01-20 11:37:50,327 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 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 [2021-01-20 11:37:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:37:50,328 INFO L225 Difference]: With dead ends: 816 [2021-01-20 11:37:50,329 INFO L226 Difference]: Without dead ends: 816 [2021-01-20 11:37:50,330 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2021-01-20 11:37:50,330 INFO L78 Accepts]: Start accepts. Automaton has 816 states. Word has length 217 [2021-01-20 11:37:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:37:50,330 INFO L481 AbstractCegarLoop]: Abstraction has 816 states. [2021-01-20 11:37:50,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:37:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states. [2021-01-20 11:37:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-01-20 11:37:50,332 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:37:50,332 INFO L504 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 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] [2021-01-20 11:37:50,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-20 11:37:50,547 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:37:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:37:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1339863883, now seen corresponding path program 38 times [2021-01-20 11:37:50,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:37:50,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563444266] [2021-01-20 11:37:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:37:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:37:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:37:54,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563444266] [2021-01-20 11:37:54,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40254394] [2021-01-20 11:37:54,926 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 [2021-01-20 11:37:55,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 11:37:55,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:37:55,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-20 11:37:55,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:37:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:37:55,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:37:55,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-01-20 11:37:55,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614766371] [2021-01-20 11:37:55,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-01-20 11:37:55,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:37:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-01-20 11:37:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2021-01-20 11:37:55,221 INFO L87 Difference]: Start difference. First operand 816 states. Second operand has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:38:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:38:02,033 INFO L93 Difference]: Finished difference Result 821 states and 1400 transitions. [2021-01-20 11:38:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-01-20 11:38:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 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 [2021-01-20 11:38:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:38:02,036 INFO L225 Difference]: With dead ends: 821 [2021-01-20 11:38:02,036 INFO L226 Difference]: Without dead ends: 821 [2021-01-20 11:38:02,037 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2021-01-20 11:38:02,037 INFO L78 Accepts]: Start accepts. Automaton has 821 states. Word has length 222 [2021-01-20 11:38:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:38:02,038 INFO L481 AbstractCegarLoop]: Abstraction has 821 states. [2021-01-20 11:38:02,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:38:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states. [2021-01-20 11:38:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-01-20 11:38:02,040 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:38:02,040 INFO L504 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 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] [2021-01-20 11:38:02,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-20 11:38:02,254 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:38:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:38:02,255 INFO L82 PathProgramCache]: Analyzing trace with hash 398874719, now seen corresponding path program 39 times [2021-01-20 11:38:02,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:38:02,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004587966] [2021-01-20 11:38:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:38:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:38:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:38:06,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004587966] [2021-01-20 11:38:06,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181766896] [2021-01-20 11:38:06,934 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 [2021-01-20 11:38:42,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-01-20 11:38:42,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:38:42,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-20 11:38:42,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:38:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:38:43,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:38:43,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-01-20 11:38:43,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973194445] [2021-01-20 11:38:43,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-01-20 11:38:43,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:38:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-01-20 11:38:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2021-01-20 11:38:43,149 INFO L87 Difference]: Start difference. First operand 821 states. Second operand has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:38:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:38:50,847 INFO L93 Difference]: Finished difference Result 826 states and 1405 transitions. [2021-01-20 11:38:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-01-20 11:38:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 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 [2021-01-20 11:38:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:38:50,850 INFO L225 Difference]: With dead ends: 826 [2021-01-20 11:38:50,850 INFO L226 Difference]: Without dead ends: 826 [2021-01-20 11:38:50,851 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=8084, Invalid=17676, Unknown=0, NotChecked=0, Total=25760 [2021-01-20 11:38:50,851 INFO L78 Accepts]: Start accepts. Automaton has 826 states. Word has length 227 [2021-01-20 11:38:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:38:50,852 INFO L481 AbstractCegarLoop]: Abstraction has 826 states. [2021-01-20 11:38:50,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:38:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states. [2021-01-20 11:38:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-20 11:38:50,853 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:38:50,853 INFO L504 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 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] [2021-01-20 11:38:51,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:38:51,068 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:38:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:38:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash -446036235, now seen corresponding path program 40 times [2021-01-20 11:38:51,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:38:51,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745402578] [2021-01-20 11:38:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:38:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:38:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:38:56,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745402578] [2021-01-20 11:38:56,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039919367] [2021-01-20 11:38:56,131 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 [2021-01-20 11:38:56,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 11:38:56,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:38:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-20 11:38:56,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:38:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:38:56,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:38:56,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-01-20 11:38:56,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168994421] [2021-01-20 11:38:56,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-01-20 11:38:56,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:38:56,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-01-20 11:38:56,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2021-01-20 11:38:56,481 INFO L87 Difference]: Start difference. First operand 826 states. Second operand has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:39:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:39:04,355 INFO L93 Difference]: Finished difference Result 831 states and 1410 transitions. [2021-01-20 11:39:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-01-20 11:39:04,356 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 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 [2021-01-20 11:39:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:39:04,357 INFO L225 Difference]: With dead ends: 831 [2021-01-20 11:39:04,357 INFO L226 Difference]: Without dead ends: 831 [2021-01-20 11:39:04,359 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=8491, Invalid=18569, Unknown=0, NotChecked=0, Total=27060 [2021-01-20 11:39:04,359 INFO L78 Accepts]: Start accepts. Automaton has 831 states. Word has length 232 [2021-01-20 11:39:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:39:04,359 INFO L481 AbstractCegarLoop]: Abstraction has 831 states. [2021-01-20 11:39:04,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:39:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states. [2021-01-20 11:39:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-01-20 11:39:04,361 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:39:04,361 INFO L504 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 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] [2021-01-20 11:39:04,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 11:39:04,574 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:39:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:39:04,575 INFO L82 PathProgramCache]: Analyzing trace with hash 282723871, now seen corresponding path program 41 times [2021-01-20 11:39:04,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:39:04,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826480641] [2021-01-20 11:39:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:39:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:39:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:39:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826480641] [2021-01-20 11:39:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9457168] [2021-01-20 11:39:10,003 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 [2021-01-20 11:42:24,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-01-20 11:42:24,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 11:42:29,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-20 11:42:29,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 11:42:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:42:29,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 11:42:29,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-01-20 11:42:29,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878709444] [2021-01-20 11:42:29,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-01-20 11:42:29,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 11:42:29,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-01-20 11:42:29,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2021-01-20 11:42:29,394 INFO L87 Difference]: Start difference. First operand 831 states. Second operand has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:42:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 11:42:39,835 INFO L93 Difference]: Finished difference Result 836 states and 1415 transitions. [2021-01-20 11:42:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-01-20 11:42:39,836 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-01-20 11:42:39,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 11:42:39,838 INFO L225 Difference]: With dead ends: 836 [2021-01-20 11:42:39,839 INFO L226 Difference]: Without dead ends: 836 [2021-01-20 11:42:39,840 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=8908, Invalid=19484, Unknown=0, NotChecked=0, Total=28392 [2021-01-20 11:42:39,841 INFO L78 Accepts]: Start accepts. Automaton has 836 states. Word has length 237 [2021-01-20 11:42:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 11:42:39,841 INFO L481 AbstractCegarLoop]: Abstraction has 836 states. [2021-01-20 11:42:39,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 11:42:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states. [2021-01-20 11:42:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-01-20 11:42:39,843 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 11:42:39,843 INFO L504 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 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] [2021-01-20 11:42:40,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-20 11:42:40,044 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 11:42:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 11:42:40,045 INFO L82 PathProgramCache]: Analyzing trace with hash 507310389, now seen corresponding path program 42 times [2021-01-20 11:42:40,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 11:42:40,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87683991] [2021-01-20 11:42:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 11:42:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 11:42:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-20 11:42:46,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87683991] [2021-01-20 11:42:46,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924441956] [2021-01-20 11:42:46,761 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 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown