/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 17:49:13,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 17:49:13,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 17:49:13,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 17:49:13,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 17:49:13,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 17:49:13,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 17:49:13,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 17:49:13,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 17:49:13,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 17:49:13,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 17:49:13,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 17:49:13,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 17:49:13,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 17:49:13,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 17:49:13,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 17:49:13,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 17:49:13,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 17:49:13,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 17:49:13,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 17:49:13,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 17:49:13,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 17:49:13,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 17:49:13,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 17:49:13,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 17:49:13,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 17:49:13,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 17:49:13,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 17:49:13,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 17:49:13,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 17:49:13,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 17:49:13,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 17:49:13,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 17:49:13,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 17:49:13,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 17:49:13,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 17:49:13,328 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-keepdead.epf [2021-01-20 17:49:13,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 17:49:13,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 17:49:13,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 17:49:13,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 17:49:13,358 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 17:49:13,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 17:49:13,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 17:49:13,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 17:49:13,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 17:49:13,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 17:49:13,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 17:49:13,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 17:49:13,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 17:49:13,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 17:49:13,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 17:49:13,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 17:49:13,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 17:49:13,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 17:49:13,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 17:49:13,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 17:49:13,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 17:49:13,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 17:49:13,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 17:49:13,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 17:49:13,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 17:49:13,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 17:49:13,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 17:49:13,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 17:49:13,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 17:49:13,365 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 17:49:13,365 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 17:49:13,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 17:49:13,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 17:49:13,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 17:49:13,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 17:49:13,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 17:49:13,846 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 17:49:13,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2021-01-20 17:49:13,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40948d483/9a005bdad6cc49338301ecc33e31917d/FLAG03dc3d778 [2021-01-20 17:49:14,646 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 17:49:14,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2021-01-20 17:49:14,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40948d483/9a005bdad6cc49338301ecc33e31917d/FLAG03dc3d778 [2021-01-20 17:49:14,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40948d483/9a005bdad6cc49338301ecc33e31917d [2021-01-20 17:49:14,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 17:49:14,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 17:49:14,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 17:49:14,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 17:49:14,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 17:49:14,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 05:49:14" (1/1) ... [2021-01-20 17:49:14,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d606f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:14, skipping insertion in model container [2021-01-20 17:49:14,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 05:49:14" (1/1) ... [2021-01-20 17:49:14,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 17:49:14,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 17:49:15,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 17:49:15,610 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 17:49:15,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 17:49:15,881 INFO L208 MainTranslator]: Completed translation [2021-01-20 17:49:15,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15 WrapperNode [2021-01-20 17:49:15,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 17:49:15,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 17:49:15,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 17:49:15,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 17:49:15,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:15,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 17:49:16,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 17:49:16,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 17:49:16,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 17:49:16,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (1/1) ... [2021-01-20 17:49:16,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 17:49:16,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 17:49:16,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 17:49:16,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 17:49:16,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (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 17:49:16,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 17:49:16,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 17:49:16,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 17:49:16,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2021-01-20 17:49:16,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2021-01-20 17:49:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 17:49:16,123 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-20 17:49:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 17:49:16,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 17:49:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 17:49:16,127 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 17:49:16,787 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 17:49:16,788 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-20 17:49:16,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 05:49:16 BoogieIcfgContainer [2021-01-20 17:49:16,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 17:49:16,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 17:49:16,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 17:49:16,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 17:49:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 05:49:14" (1/3) ... [2021-01-20 17:49:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265942f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 05:49:16, skipping insertion in model container [2021-01-20 17:49:16,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 05:49:15" (2/3) ... [2021-01-20 17:49:16,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265942f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 05:49:16, skipping insertion in model container [2021-01-20 17:49:16,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 05:49:16" (3/3) ... [2021-01-20 17:49:16,800 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2021-01-20 17:49:16,817 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 17:49:16,817 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 17:49:16,822 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 17:49:16,823 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 17:49:16,864 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,864 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,865 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,866 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,866 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,866 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,866 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,867 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,867 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,867 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,867 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,867 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,868 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,868 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,868 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,868 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,868 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,869 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,869 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,869 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,869 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,869 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,870 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,870 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,870 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,870 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,871 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,871 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,871 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,871 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,871 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,872 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,873 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,873 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,873 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,873 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,873 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,874 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,874 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,874 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,875 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,875 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,875 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,875 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,875 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,876 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,876 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,876 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,876 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,877 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,878 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,879 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,879 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,879 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,879 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,879 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,881 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,881 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,881 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,881 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,882 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,882 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,882 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,882 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,882 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,883 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,883 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,883 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,883 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,884 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,884 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,884 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,884 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,884 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,885 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,885 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,885 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,886 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,886 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,886 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,886 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,886 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,887 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,887 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,889 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,890 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,890 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,890 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,890 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,890 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,891 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,891 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,891 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,891 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,891 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,892 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,894 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,894 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,895 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,895 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,895 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,895 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,896 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,896 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,896 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,896 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,896 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,897 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,900 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,900 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,901 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,901 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,901 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,901 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,902 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,902 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,905 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,905 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,906 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,907 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,907 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,908 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,910 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,910 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,911 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,911 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,911 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,911 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,913 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,913 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,915 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,915 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,915 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,915 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,917 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,917 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,920 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,920 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,922 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,923 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,923 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,923 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,924 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,924 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,924 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,924 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,924 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,925 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,925 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,925 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,925 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,926 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,926 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,926 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,927 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,927 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,927 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,927 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,927 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,928 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,928 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,928 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,928 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,928 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,929 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 17:49:16,944 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-20 17:49:16,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-20 17:49:16,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 17:49:16,998 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 17:49:16,999 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 17:49:16,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 17:49:16,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 17:49:16,999 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 17:49:16,999 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 17:49:16,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 17:49:17,013 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 114 transitions, 236 flow [2021-01-20 17:49:17,099 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 17:49:17,107 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 17:49:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 17:49:17,118 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:17,119 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 17:49:17,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1689694122, now seen corresponding path program 1 times [2021-01-20 17:49:17,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:17,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558174736] [2021-01-20 17:49:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:17,383 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 17:49:17,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558174736] [2021-01-20 17:49:17,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 17:49:17,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 17:49:17,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045487636] [2021-01-20 17:49:17,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 17:49:17,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:17,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 17:49:17,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 17:49:17,415 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 17:49:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:17,503 INFO L93 Difference]: Finished difference Result 1127 states and 2257 transitions. [2021-01-20 17:49:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 17:49:17,504 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 17:49:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:17,507 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 17:49:17,507 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2257 transitions. Word has length 32 [2021-01-20 17:49:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:17,509 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 2257 transitions. [2021-01-20 17:49:17,509 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 17:49:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2257 transitions. [2021-01-20 17:49:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 17:49:17,514 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:17,515 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 17:49:17,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 17:49:17,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2099714549, now seen corresponding path program 1 times [2021-01-20 17:49:17,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:17,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141236614] [2021-01-20 17:49:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:17,717 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 17:49:17,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141236614] [2021-01-20 17:49:17,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 17:49:17,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 17:49:17,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940828727] [2021-01-20 17:49:17,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 17:49:17,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:17,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 17:49:17,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 17:49:17,723 INFO L87 Difference]: Start difference. First operand 1127 states and 2257 transitions. 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 17:49:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:17,931 INFO L93 Difference]: Finished difference Result 663 states and 1255 transitions. [2021-01-20 17:49:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 17:49:17,934 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 17:49:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:17,936 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 17:49:17,936 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1255 transitions. Word has length 32 [2021-01-20 17:49:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:17,937 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 1255 transitions. [2021-01-20 17:49:17,937 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 17:49:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1255 transitions. [2021-01-20 17:49:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-20 17:49:17,940 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:17,940 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 17:49:17,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 17:49:17,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash 860934943, now seen corresponding path program 1 times [2021-01-20 17:49:17,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:17,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257404830] [2021-01-20 17:49:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:18,066 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 17:49:18,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257404830] [2021-01-20 17:49:18,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748623664] [2021-01-20 17:49:18,068 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 17:49:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:18,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 17:49:18,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:18,326 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 17:49:18,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:18,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 17:49:18,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485215122] [2021-01-20 17:49:18,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 17:49:18,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 17:49:18,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 17:49:18,330 INFO L87 Difference]: Start difference. First operand 663 states and 1255 transitions. 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 17:49:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:18,504 INFO L93 Difference]: Finished difference Result 668 states and 1260 transitions. [2021-01-20 17:49:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 17:49:18,504 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 17:49:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:18,505 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 17:49:18,505 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1260 transitions. Word has length 37 [2021-01-20 17:49:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:18,506 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 1260 transitions. [2021-01-20 17:49:18,506 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 17:49:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1260 transitions. [2021-01-20 17:49:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 17:49:18,508 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:18,508 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 17:49:18,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-20 17:49:18,718 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:18,720 INFO L82 PathProgramCache]: Analyzing trace with hash -419544011, now seen corresponding path program 2 times [2021-01-20 17:49:18,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:18,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110606097] [2021-01-20 17:49:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:19,006 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 17:49:19,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110606097] [2021-01-20 17:49:19,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329364158] [2021-01-20 17:49:19,007 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 17:49:19,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:49:19,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:19,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-20 17:49:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:19,165 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 17:49:19,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:19,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-20 17:49:19,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790808253] [2021-01-20 17:49:19,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 17:49:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:19,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 17:49:19,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-20 17:49:19,169 INFO L87 Difference]: Start difference. First operand 668 states and 1260 transitions. 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 17:49:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:19,299 INFO L93 Difference]: Finished difference Result 673 states and 1265 transitions. [2021-01-20 17:49:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 17:49:19,300 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 17:49:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:19,301 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-20 17:49:19,302 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1265 transitions. Word has length 42 [2021-01-20 17:49:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:19,302 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 1265 transitions. [2021-01-20 17:49:19,302 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 17:49:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1265 transitions. [2021-01-20 17:49:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 17:49:19,304 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:19,304 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 17:49:19,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:19,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:19,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1889145055, now seen corresponding path program 3 times [2021-01-20 17:49:19,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:19,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946434631] [2021-01-20 17:49:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:19,658 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 17:49:19,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946434631] [2021-01-20 17:49:19,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917211317] [2021-01-20 17:49:19,660 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 17:49:19,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 17:49:19,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:19,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 17:49:19,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:19,801 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 17:49:19,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:19,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 17:49:19,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143654279] [2021-01-20 17:49:19,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 17:49:19,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:19,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 17:49:19,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-20 17:49:19,804 INFO L87 Difference]: Start difference. First operand 673 states and 1265 transitions. 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 17:49:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:19,978 INFO L93 Difference]: Finished difference Result 678 states and 1270 transitions. [2021-01-20 17:49:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 17:49:19,979 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 17:49:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:19,980 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 17:49:19,980 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1270 transitions. Word has length 47 [2021-01-20 17:49:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:19,981 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 1270 transitions. [2021-01-20 17:49:19,981 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 17:49:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1270 transitions. [2021-01-20 17:49:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 17:49:19,982 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:19,982 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 17:49:20,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:20,190 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash -292184459, now seen corresponding path program 4 times [2021-01-20 17:49:20,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:20,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906767502] [2021-01-20 17:49:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:20,311 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 17:49:20,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906767502] [2021-01-20 17:49:20,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124411020] [2021-01-20 17:49:20,312 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 17:49:20,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:49:20,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:20,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 17:49:20,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:20,450 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 17:49:20,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:20,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-20 17:49:20,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046870963] [2021-01-20 17:49:20,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 17:49:20,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:20,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 17:49:20,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 17:49:20,453 INFO L87 Difference]: Start difference. First operand 678 states and 1270 transitions. 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 17:49:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:20,718 INFO L93 Difference]: Finished difference Result 683 states and 1275 transitions. [2021-01-20 17:49:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 17:49:20,719 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 17:49:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:20,720 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-01-20 17:49:20,720 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1275 transitions. Word has length 52 [2021-01-20 17:49:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:20,721 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1275 transitions. [2021-01-20 17:49:20,721 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 17:49:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1275 transitions. [2021-01-20 17:49:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-20 17:49:20,722 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:20,722 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 17:49:20,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:20,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:20,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1866391905, now seen corresponding path program 5 times [2021-01-20 17:49:20,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:20,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207209956] [2021-01-20 17:49:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:21,161 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 17:49:21,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207209956] [2021-01-20 17:49:21,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794121510] [2021-01-20 17:49:21,162 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 17:49:21,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-20 17:49:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 17:49:21,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:21,307 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 17:49:21,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:21,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 17:49:21,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813149313] [2021-01-20 17:49:21,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 17:49:21,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:21,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 17:49:21,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-20 17:49:21,309 INFO L87 Difference]: Start difference. First operand 683 states and 1275 transitions. 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 17:49:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:21,692 INFO L93 Difference]: Finished difference Result 688 states and 1280 transitions. [2021-01-20 17:49:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 17:49:21,693 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 17:49:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:21,695 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 17:49:21,695 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1280 transitions. Word has length 57 [2021-01-20 17:49:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:21,695 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1280 transitions. [2021-01-20 17:49:21,695 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 17:49:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1280 transitions. [2021-01-20 17:49:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-20 17:49:21,699 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:21,701 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 17:49:21,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-20 17:49:21,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1165043893, now seen corresponding path program 6 times [2021-01-20 17:49:21,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:21,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825378223] [2021-01-20 17:49:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:22,148 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 17:49:22,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825378223] [2021-01-20 17:49:22,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090518741] [2021-01-20 17:49:22,149 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 17:49:22,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 17:49:22,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:22,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 17:49:22,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:22,355 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 17:49:22,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:22,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 17:49:22,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838991474] [2021-01-20 17:49:22,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 17:49:22,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 17:49:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-20 17:49:22,358 INFO L87 Difference]: Start difference. First operand 688 states and 1280 transitions. 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 17:49:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:22,690 INFO L93 Difference]: Finished difference Result 693 states and 1285 transitions. [2021-01-20 17:49:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 17:49:22,691 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 17:49:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:22,692 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-20 17:49:22,693 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1285 transitions. Word has length 62 [2021-01-20 17:49:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:22,693 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1285 transitions. [2021-01-20 17:49:22,693 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 17:49:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1285 transitions. [2021-01-20 17:49:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-20 17:49:22,694 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:22,694 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 17:49:22,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:22,903 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash 885128287, now seen corresponding path program 7 times [2021-01-20 17:49:22,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:22,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804635148] [2021-01-20 17:49:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:23,157 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 17:49:23,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804635148] [2021-01-20 17:49:23,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783870076] [2021-01-20 17:49:23,158 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 17:49:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:23,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 17:49:23,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:23,310 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 17:49:23,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:23,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 17:49:23,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839296031] [2021-01-20 17:49:23,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 17:49:23,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 17:49:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-20 17:49:23,316 INFO L87 Difference]: Start difference. First operand 693 states and 1285 transitions. 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 17:49:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:23,782 INFO L93 Difference]: Finished difference Result 698 states and 1290 transitions. [2021-01-20 17:49:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 17:49:23,782 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 17:49:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:23,784 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 17:49:23,784 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1290 transitions. Word has length 67 [2021-01-20 17:49:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:23,784 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 1290 transitions. [2021-01-20 17:49:23,785 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 17:49:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1290 transitions. [2021-01-20 17:49:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-20 17:49:23,786 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:23,786 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 17:49:23,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:23,995 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:23,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2011897099, now seen corresponding path program 8 times [2021-01-20 17:49:23,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:23,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946028701] [2021-01-20 17:49:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:24,247 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 17:49:24,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946028701] [2021-01-20 17:49:24,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980500856] [2021-01-20 17:49:24,248 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 17:49:24,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:49:24,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 17:49:24,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:24,385 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 17:49:24,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:24,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-20 17:49:24,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14097869] [2021-01-20 17:49:24,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 17:49:24,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:24,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 17:49:24,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-01-20 17:49:24,388 INFO L87 Difference]: Start difference. First operand 698 states and 1290 transitions. 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 17:49:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:24,968 INFO L93 Difference]: Finished difference Result 703 states and 1295 transitions. [2021-01-20 17:49:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 17:49:24,969 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 17:49:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:24,970 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 17:49:24,971 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1295 transitions. Word has length 72 [2021-01-20 17:49:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:24,971 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 1295 transitions. [2021-01-20 17:49:24,971 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 17:49:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1295 transitions. [2021-01-20 17:49:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-20 17:49:24,973 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:24,973 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 17:49:25,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 17:49:25,183 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash -224876001, now seen corresponding path program 9 times [2021-01-20 17:49:25,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:25,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123708459] [2021-01-20 17:49:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:25,456 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 17:49:25,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123708459] [2021-01-20 17:49:25,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625288224] [2021-01-20 17:49:25,457 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 17:49:25,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 17:49:25,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:25,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 17:49:25,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:25,798 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 17:49:25,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:25,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 17:49:25,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753926505] [2021-01-20 17:49:25,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 17:49:25,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 17:49:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-20 17:49:25,801 INFO L87 Difference]: Start difference. First operand 703 states and 1295 transitions. 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 17:49:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:26,452 INFO L93 Difference]: Finished difference Result 708 states and 1300 transitions. [2021-01-20 17:49:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 17:49:26,453 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 17:49:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:26,454 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 17:49:26,454 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1300 transitions. Word has length 77 [2021-01-20 17:49:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:26,455 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1300 transitions. [2021-01-20 17:49:26,456 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 17:49:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1300 transitions. [2021-01-20 17:49:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-20 17:49:26,461 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:26,461 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 17:49:26,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:26,671 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2114243893, now seen corresponding path program 10 times [2021-01-20 17:49:26,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:26,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571159425] [2021-01-20 17:49:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:27,028 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 17:49:27,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571159425] [2021-01-20 17:49:27,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983646795] [2021-01-20 17:49:27,028 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 17:49:27,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:49:27,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:27,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 17:49:27,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:27,213 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 17:49:27,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:27,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-20 17:49:27,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559965099] [2021-01-20 17:49:27,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 17:49:27,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:27,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 17:49:27,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-20 17:49:27,216 INFO L87 Difference]: Start difference. First operand 708 states and 1300 transitions. 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 17:49:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:27,835 INFO L93 Difference]: Finished difference Result 713 states and 1305 transitions. [2021-01-20 17:49:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 17:49:27,836 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 17:49:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:27,837 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 17:49:27,837 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1305 transitions. Word has length 82 [2021-01-20 17:49:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:27,838 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1305 transitions. [2021-01-20 17:49:27,838 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 17:49:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1305 transitions. [2021-01-20 17:49:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-20 17:49:27,839 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:27,839 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 17:49:28,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:28,047 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 356591583, now seen corresponding path program 11 times [2021-01-20 17:49:28,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:28,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611917975] [2021-01-20 17:49:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:28,442 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 17:49:28,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611917975] [2021-01-20 17:49:28,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680434882] [2021-01-20 17:49:28,443 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 17:49:28,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-20 17:49:28,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:28,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 17:49:28,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:28,636 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 17:49:28,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:28,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-01-20 17:49:28,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475934225] [2021-01-20 17:49:28,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-20 17:49:28,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-20 17:49:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-01-20 17:49:28,639 INFO L87 Difference]: Start difference. First operand 713 states and 1305 transitions. 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 17:49:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:29,445 INFO L93 Difference]: Finished difference Result 718 states and 1310 transitions. [2021-01-20 17:49:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 17:49:29,446 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 17:49:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:29,447 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 17:49:29,447 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1310 transitions. Word has length 87 [2021-01-20 17:49:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:29,448 INFO L481 AbstractCegarLoop]: Abstraction has 718 states and 1310 transitions. [2021-01-20 17:49:29,448 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 17:49:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1310 transitions. [2021-01-20 17:49:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-01-20 17:49:29,449 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:29,449 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 17:49:29,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-20 17:49:29,658 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:29,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1506076533, now seen corresponding path program 12 times [2021-01-20 17:49:29,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:29,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589655214] [2021-01-20 17:49:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:30,102 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 17:49:30,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589655214] [2021-01-20 17:49:30,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97322108] [2021-01-20 17:49:30,103 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 17:49:30,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-20 17:49:30,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:30,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 17:49:30,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:30,474 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 17:49:30,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:30,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-20 17:49:30,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382893375] [2021-01-20 17:49:30,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-20 17:49:30,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:30,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-20 17:49:30,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-20 17:49:30,477 INFO L87 Difference]: Start difference. First operand 718 states and 1310 transitions. 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 17:49:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:31,426 INFO L93 Difference]: Finished difference Result 723 states and 1315 transitions. [2021-01-20 17:49:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 17:49:31,428 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 17:49:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:31,429 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 17:49:31,430 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1315 transitions. Word has length 92 [2021-01-20 17:49:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:31,430 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1315 transitions. [2021-01-20 17:49:31,430 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 17:49:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1315 transitions. [2021-01-20 17:49:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-20 17:49:31,431 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:31,431 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 17:49:31,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 17:49:31,641 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1555527071, now seen corresponding path program 13 times [2021-01-20 17:49:31,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:31,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839028660] [2021-01-20 17:49:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:32,108 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 17:49:32,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839028660] [2021-01-20 17:49:32,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943729529] [2021-01-20 17:49:32,109 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 17:49:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:32,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 17:49:32,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:32,345 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 17:49:32,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:32,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-20 17:49:32,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165870089] [2021-01-20 17:49:32,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-20 17:49:32,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-20 17:49:32,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 17:49:32,350 INFO L87 Difference]: Start difference. First operand 723 states and 1315 transitions. 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 17:49:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:33,279 INFO L93 Difference]: Finished difference Result 728 states and 1320 transitions. [2021-01-20 17:49:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 17:49:33,280 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 17:49:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:33,283 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 17:49:33,284 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1320 transitions. Word has length 97 [2021-01-20 17:49:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:33,284 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 1320 transitions. [2021-01-20 17:49:33,284 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 17:49:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1320 transitions. [2021-01-20 17:49:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-20 17:49:33,285 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:33,286 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 17:49:33,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 17:49:33,502 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:33,503 INFO L82 PathProgramCache]: Analyzing trace with hash -119983691, now seen corresponding path program 14 times [2021-01-20 17:49:33,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:33,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206887958] [2021-01-20 17:49:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:34,130 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 17:49:34,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206887958] [2021-01-20 17:49:34,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456073723] [2021-01-20 17:49:34,131 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 17:49:34,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:49:34,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:34,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-20 17:49:34,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:34,384 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 17:49:34,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:34,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-01-20 17:49:34,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148584005] [2021-01-20 17:49:34,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-20 17:49:34,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-20 17:49:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 17:49:34,387 INFO L87 Difference]: Start difference. First operand 728 states and 1320 transitions. 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 17:49:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:35,562 INFO L93 Difference]: Finished difference Result 733 states and 1325 transitions. [2021-01-20 17:49:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-20 17:49:35,564 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 17:49:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:35,567 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-01-20 17:49:35,567 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1325 transitions. Word has length 102 [2021-01-20 17:49:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:35,567 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1325 transitions. [2021-01-20 17:49:35,568 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 17:49:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1325 transitions. [2021-01-20 17:49:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-20 17:49:35,571 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:35,571 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 17:49:35,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:35,772 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1107848353, now seen corresponding path program 15 times [2021-01-20 17:49:35,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:35,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530082322] [2021-01-20 17:49:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:36,355 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 17:49:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530082322] [2021-01-20 17:49:36,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103349741] [2021-01-20 17:49:36,362 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 17:49:36,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-20 17:49:36,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:36,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 17:49:36,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:36,992 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 17:49:36,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:36,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-20 17:49:36,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234454665] [2021-01-20 17:49:36,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-20 17:49:36,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:36,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-20 17:49:36,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 17:49:36,995 INFO L87 Difference]: Start difference. First operand 733 states and 1325 transitions. 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 17:49:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:38,284 INFO L93 Difference]: Finished difference Result 738 states and 1330 transitions. [2021-01-20 17:49:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 17:49:38,284 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 17:49:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:38,286 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 17:49:38,286 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1330 transitions. Word has length 107 [2021-01-20 17:49:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:38,286 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 1330 transitions. [2021-01-20 17:49:38,286 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 17:49:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1330 transitions. [2021-01-20 17:49:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-20 17:49:38,288 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:38,288 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 17:49:38,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-20 17:49:38,493 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:38,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 600157173, now seen corresponding path program 16 times [2021-01-20 17:49:38,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:38,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263638003] [2021-01-20 17:49:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:39,144 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 17:49:39,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263638003] [2021-01-20 17:49:39,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91199586] [2021-01-20 17:49:39,145 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 17:49:39,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:49:39,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:39,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-20 17:49:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:39,359 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 17:49:39,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:39,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-01-20 17:49:39,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187106165] [2021-01-20 17:49:39,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-20 17:49:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-20 17:49:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 17:49:39,361 INFO L87 Difference]: Start difference. First operand 738 states and 1330 transitions. 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 17:49:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:40,684 INFO L93 Difference]: Finished difference Result 743 states and 1335 transitions. [2021-01-20 17:49:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-20 17:49:40,684 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 17:49:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:40,686 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 17:49:40,687 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1335 transitions. Word has length 112 [2021-01-20 17:49:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:40,687 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1335 transitions. [2021-01-20 17:49:40,687 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 17:49:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1335 transitions. [2021-01-20 17:49:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-20 17:49:40,688 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:40,689 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 17:49:40,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 17:49:40,901 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:40,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash 587039007, now seen corresponding path program 17 times [2021-01-20 17:49:40,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:40,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87429305] [2021-01-20 17:49:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:41,650 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 17:49:41,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87429305] [2021-01-20 17:49:41,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331700074] [2021-01-20 17:49:41,651 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 17:49:41,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-20 17:49:41,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:41,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-20 17:49:41,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:41,998 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 17:49:41,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:41,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-01-20 17:49:41,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062514591] [2021-01-20 17:49:42,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-20 17:49:42,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-20 17:49:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 17:49:42,001 INFO L87 Difference]: Start difference. First operand 743 states and 1335 transitions. 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 17:49:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:43,456 INFO L93 Difference]: Finished difference Result 748 states and 1340 transitions. [2021-01-20 17:49:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-20 17:49:43,457 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 17:49:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:43,459 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-01-20 17:49:43,459 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1340 transitions. Word has length 117 [2021-01-20 17:49:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:43,462 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 1340 transitions. [2021-01-20 17:49:43,462 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 17:49:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1340 transitions. [2021-01-20 17:49:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-20 17:49:43,463 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:43,464 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 17:49:43,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:43,676 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:43,677 INFO L82 PathProgramCache]: Analyzing trace with hash -837921227, now seen corresponding path program 18 times [2021-01-20 17:49:43,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:43,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206459127] [2021-01-20 17:49:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:44,584 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 17:49:44,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206459127] [2021-01-20 17:49:44,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177337124] [2021-01-20 17:49:44,585 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 17:49:45,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-20 17:49:45,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:45,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-20 17:49:45,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:46,008 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 17:49:46,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:46,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-01-20 17:49:46,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206184137] [2021-01-20 17:49:46,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-20 17:49:46,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-20 17:49:46,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 17:49:46,011 INFO L87 Difference]: Start difference. First operand 748 states and 1340 transitions. 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 17:49:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:47,451 INFO L93 Difference]: Finished difference Result 753 states and 1345 transitions. [2021-01-20 17:49:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-20 17:49:47,452 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 17:49:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:47,454 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-01-20 17:49:47,454 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1345 transitions. Word has length 122 [2021-01-20 17:49:47,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:47,455 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1345 transitions. [2021-01-20 17:49:47,455 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 17:49:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1345 transitions. [2021-01-20 17:49:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-01-20 17:49:47,456 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:47,457 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 17:49:47,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:47,668 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 717569759, now seen corresponding path program 19 times [2021-01-20 17:49:47,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:47,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916284765] [2021-01-20 17:49:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:48,684 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 17:49:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916284765] [2021-01-20 17:49:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37393456] [2021-01-20 17:49:48,684 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 17:49:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:48,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-20 17:49:48,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:48,888 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 17:49:48,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:48,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-01-20 17:49:48,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387347232] [2021-01-20 17:49:48,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-20 17:49:48,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:48,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-20 17:49:48,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-01-20 17:49:48,891 INFO L87 Difference]: Start difference. First operand 753 states and 1345 transitions. 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 17:49:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:50,702 INFO L93 Difference]: Finished difference Result 758 states and 1350 transitions. [2021-01-20 17:49:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-20 17:49:50,703 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 17:49:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:50,705 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 17:49:50,705 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1350 transitions. Word has length 127 [2021-01-20 17:49:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:50,706 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1350 transitions. [2021-01-20 17:49:50,706 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 17:49:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1350 transitions. [2021-01-20 17:49:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-01-20 17:49:50,707 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:50,708 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 17:49:50,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:49:50,921 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1446457461, now seen corresponding path program 20 times [2021-01-20 17:49:50,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:50,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920018952] [2021-01-20 17:49:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:51,954 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 17:49:51,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920018952] [2021-01-20 17:49:51,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568530346] [2021-01-20 17:49:51,954 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 17:49:52,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:49:52,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:52,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-20 17:49:52,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:52,164 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 17:49:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-01-20 17:49:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6994561] [2021-01-20 17:49:52,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-20 17:49:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-20 17:49:52,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 17:49:52,168 INFO L87 Difference]: Start difference. First operand 758 states and 1350 transitions. 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 17:49:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:53,921 INFO L93 Difference]: Finished difference Result 763 states and 1355 transitions. [2021-01-20 17:49:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-01-20 17:49:53,921 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 17:49:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:53,922 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2021-01-20 17:49:53,922 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1355 transitions. Word has length 132 [2021-01-20 17:49:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:53,923 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 1355 transitions. [2021-01-20 17:49:53,923 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 17:49:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1355 transitions. [2021-01-20 17:49:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-01-20 17:49:53,924 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:53,924 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 17:49:54,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-20 17:49:54,136 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash -380973921, now seen corresponding path program 21 times [2021-01-20 17:49:54,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:54,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215588869] [2021-01-20 17:49:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:49:55,166 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 17:49:55,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215588869] [2021-01-20 17:49:55,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370929366] [2021-01-20 17:49:55,167 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 17:49:57,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-01-20 17:49:57,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:49:57,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-20 17:49:57,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:49:57,189 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 17:49:57,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:49:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-01-20 17:49:57,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709648618] [2021-01-20 17:49:57,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-20 17:49:57,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:49:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-20 17:49:57,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 17:49:57,193 INFO L87 Difference]: Start difference. First operand 763 states and 1355 transitions. 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 17:49:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:49:59,199 INFO L93 Difference]: Finished difference Result 768 states and 1360 transitions. [2021-01-20 17:49:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-01-20 17:49:59,200 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 17:49:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:49:59,202 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 17:49:59,202 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1360 transitions. Word has length 137 [2021-01-20 17:49:59,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:49:59,202 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1360 transitions. [2021-01-20 17:49:59,202 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 17:49:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1360 transitions. [2021-01-20 17:49:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-01-20 17:49:59,203 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:49:59,204 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 17:49:59,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-20 17:49:59,405 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:49:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:49:59,406 INFO L82 PathProgramCache]: Analyzing trace with hash -976995659, now seen corresponding path program 22 times [2021-01-20 17:49:59,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:49:59,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546772832] [2021-01-20 17:49:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:49:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:00,676 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 17:50:00,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546772832] [2021-01-20 17:50:00,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901125393] [2021-01-20 17:50:00,676 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 17:50:00,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:50:00,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:00,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-20 17:50:00,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:00,889 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 17:50:00,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:00,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-01-20 17:50:00,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242049450] [2021-01-20 17:50:00,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-20 17:50:00,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:00,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-20 17:50:00,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 17:50:00,893 INFO L87 Difference]: Start difference. First operand 768 states and 1360 transitions. 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 17:50:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:03,190 INFO L93 Difference]: Finished difference Result 773 states and 1365 transitions. [2021-01-20 17:50:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-01-20 17:50:03,191 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 17:50:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:03,192 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 17:50:03,192 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1365 transitions. Word has length 142 [2021-01-20 17:50:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:03,193 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1365 transitions. [2021-01-20 17:50:03,193 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 17:50:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1365 transitions. [2021-01-20 17:50:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-01-20 17:50:03,194 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:03,195 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 17:50:03,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:50:03,397 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1484117409, now seen corresponding path program 23 times [2021-01-20 17:50:03,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:03,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945763600] [2021-01-20 17:50:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:04,814 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 17:50:04,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945763600] [2021-01-20 17:50:04,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87741477] [2021-01-20 17:50:04,815 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 17:50:05,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-01-20 17:50:05,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-20 17:50:05,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:05,577 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 17:50:05,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:05,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-01-20 17:50:05,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653309098] [2021-01-20 17:50:05,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-20 17:50:05,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:05,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-20 17:50:05,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 17:50:05,580 INFO L87 Difference]: Start difference. First operand 773 states and 1365 transitions. 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 17:50:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:08,138 INFO L93 Difference]: Finished difference Result 778 states and 1370 transitions. [2021-01-20 17:50:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-01-20 17:50:08,138 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 17:50:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:08,144 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2021-01-20 17:50:08,144 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1370 transitions. Word has length 147 [2021-01-20 17:50:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:08,145 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1370 transitions. [2021-01-20 17:50:08,145 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 17:50:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1370 transitions. [2021-01-20 17:50:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-01-20 17:50:08,146 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:08,146 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 17:50:08,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-20 17:50:08,359 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash 288978165, now seen corresponding path program 24 times [2021-01-20 17:50:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:08,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5431414] [2021-01-20 17:50:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:09,684 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 17:50:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5431414] [2021-01-20 17:50:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189903035] [2021-01-20 17:50:09,684 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 17:50:19,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-20 17:50:19,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:19,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-20 17:50:19,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:19,419 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 17:50:19,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:19,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-01-20 17:50:19,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308976670] [2021-01-20 17:50:19,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-20 17:50:19,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:19,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-20 17:50:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 17:50:19,422 INFO L87 Difference]: Start difference. First operand 778 states and 1370 transitions. 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 17:50:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:22,183 INFO L93 Difference]: Finished difference Result 783 states and 1375 transitions. [2021-01-20 17:50:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-01-20 17:50:22,184 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 17:50:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:22,186 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2021-01-20 17:50:22,186 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1375 transitions. Word has length 152 [2021-01-20 17:50:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:22,187 INFO L481 AbstractCegarLoop]: Abstraction has 783 states and 1375 transitions. [2021-01-20 17:50:22,187 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 17:50:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1375 transitions. [2021-01-20 17:50:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-20 17:50:22,188 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:22,188 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 17:50:22,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:50:22,389 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1551935457, now seen corresponding path program 25 times [2021-01-20 17:50:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664419770] [2021-01-20 17:50:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:23,970 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 17:50:23,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664419770] [2021-01-20 17:50:23,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627062075] [2021-01-20 17:50:23,972 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 17:50:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:24,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-20 17:50:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:24,240 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 17:50:24,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:24,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-01-20 17:50:24,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202756344] [2021-01-20 17:50:24,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-20 17:50:24,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-20 17:50:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 17:50:24,244 INFO L87 Difference]: Start difference. First operand 783 states and 1375 transitions. 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 17:50:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:26,963 INFO L93 Difference]: Finished difference Result 788 states and 1380 transitions. [2021-01-20 17:50:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-01-20 17:50:26,963 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 17:50:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:26,965 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 17:50:26,965 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1380 transitions. Word has length 157 [2021-01-20 17:50:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:26,966 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1380 transitions. [2021-01-20 17:50:26,966 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 17:50:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1380 transitions. [2021-01-20 17:50:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-01-20 17:50:26,967 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:26,967 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 17:50:27,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-20 17:50:27,179 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1478156085, now seen corresponding path program 26 times [2021-01-20 17:50:27,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:27,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013385100] [2021-01-20 17:50:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:28,886 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 17:50:28,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013385100] [2021-01-20 17:50:28,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923475641] [2021-01-20 17:50:28,886 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 17:50:28,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:50:28,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:28,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-20 17:50:28,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:29,106 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 17:50:29,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:29,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-01-20 17:50:29,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602249303] [2021-01-20 17:50:29,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-20 17:50:29,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:29,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-20 17:50:29,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 17:50:29,109 INFO L87 Difference]: Start difference. First operand 788 states and 1380 transitions. 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 17:50:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:32,100 INFO L93 Difference]: Finished difference Result 793 states and 1385 transitions. [2021-01-20 17:50:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-01-20 17:50:32,101 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 17:50:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:32,102 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 17:50:32,102 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1385 transitions. Word has length 162 [2021-01-20 17:50:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:32,103 INFO L481 AbstractCegarLoop]: Abstraction has 793 states and 1385 transitions. [2021-01-20 17:50:32,103 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 17:50:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1385 transitions. [2021-01-20 17:50:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-01-20 17:50:32,104 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:32,104 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 17:50:32,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-20 17:50:32,305 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:32,306 INFO L82 PathProgramCache]: Analyzing trace with hash -802794017, now seen corresponding path program 27 times [2021-01-20 17:50:32,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:32,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145596243] [2021-01-20 17:50:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:34,112 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 17:50:34,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145596243] [2021-01-20 17:50:34,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415295649] [2021-01-20 17:50:34,112 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 17:50:38,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-01-20 17:50:38,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:38,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-20 17:50:38,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:38,564 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 17:50:38,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-01-20 17:50:38,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61351801] [2021-01-20 17:50:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-20 17:50:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-20 17:50:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-01-20 17:50:38,567 INFO L87 Difference]: Start difference. First operand 793 states and 1385 transitions. 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 17:50:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:41,909 INFO L93 Difference]: Finished difference Result 798 states and 1390 transitions. [2021-01-20 17:50:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-01-20 17:50:41,910 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 17:50:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:41,912 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2021-01-20 17:50:41,912 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1390 transitions. Word has length 167 [2021-01-20 17:50:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:41,912 INFO L481 AbstractCegarLoop]: Abstraction has 798 states and 1390 transitions. [2021-01-20 17:50:41,912 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 17:50:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1390 transitions. [2021-01-20 17:50:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-20 17:50:41,913 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:41,914 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 17:50:42,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-20 17:50:42,114 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:42,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash 619477365, now seen corresponding path program 28 times [2021-01-20 17:50:42,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:42,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943418122] [2021-01-20 17:50:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:44,108 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 17:50:44,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943418122] [2021-01-20 17:50:44,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806073795] [2021-01-20 17:50:44,109 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 17:50:44,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:50:44,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:44,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-20 17:50:44,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:44,337 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 17:50:44,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:44,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-01-20 17:50:44,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905049142] [2021-01-20 17:50:44,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-20 17:50:44,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-20 17:50:44,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2021-01-20 17:50:44,340 INFO L87 Difference]: Start difference. First operand 798 states and 1390 transitions. 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 17:50:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:47,942 INFO L93 Difference]: Finished difference Result 803 states and 1395 transitions. [2021-01-20 17:50:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-01-20 17:50:47,943 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 17:50:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:47,944 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2021-01-20 17:50:47,944 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1395 transitions. Word has length 172 [2021-01-20 17:50:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:47,945 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1395 transitions. [2021-01-20 17:50:47,945 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 17:50:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1395 transitions. [2021-01-20 17:50:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-01-20 17:50:47,947 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:47,947 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 17:50:48,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:50:48,158 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1787092065, now seen corresponding path program 29 times [2021-01-20 17:50:48,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:48,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910766024] [2021-01-20 17:50:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:50,363 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 17:50:50,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910766024] [2021-01-20 17:50:50,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992462688] [2021-01-20 17:50:50,364 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 17:50:52,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-20 17:50:52,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:50:52,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-20 17:50:52,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:50:52,458 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 17:50:52,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:50:52,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-01-20 17:50:52,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008771840] [2021-01-20 17:50:52,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-20 17:50:52,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:50:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-20 17:50:52,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2021-01-20 17:50:52,461 INFO L87 Difference]: Start difference. First operand 803 states and 1395 transitions. 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 17:50:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:50:56,292 INFO L93 Difference]: Finished difference Result 808 states and 1400 transitions. [2021-01-20 17:50:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-01-20 17:50:56,292 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 17:50:56,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:50:56,294 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2021-01-20 17:50:56,295 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1400 transitions. Word has length 177 [2021-01-20 17:50:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:50:56,295 INFO L481 AbstractCegarLoop]: Abstraction has 808 states and 1400 transitions. [2021-01-20 17:50:56,296 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 17:50:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1400 transitions. [2021-01-20 17:50:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-01-20 17:50:56,297 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:50:56,297 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 17:50:56,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-20 17:50:56,511 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:50:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:50:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1389214795, now seen corresponding path program 30 times [2021-01-20 17:50:56,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:50:56,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834895949] [2021-01-20 17:50:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:50:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:50:58,793 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 17:50:58,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834895949] [2021-01-20 17:50:58,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376270747] [2021-01-20 17:50:58,794 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 17:51:30,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-01-20 17:51:30,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:51:30,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-20 17:51:30,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:51:31,066 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 17:51:31,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:51:31,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-01-20 17:51:31,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119269325] [2021-01-20 17:51:31,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-20 17:51:31,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:51:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-20 17:51:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 17:51:31,068 INFO L87 Difference]: Start difference. First operand 808 states and 1400 transitions. 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 17:51:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:51:35,240 INFO L93 Difference]: Finished difference Result 813 states and 1405 transitions. [2021-01-20 17:51:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-01-20 17:51:35,241 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 17:51:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:51:35,243 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2021-01-20 17:51:35,243 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1405 transitions. Word has length 182 [2021-01-20 17:51:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:51:35,243 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1405 transitions. [2021-01-20 17:51:35,244 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 17:51:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1405 transitions. [2021-01-20 17:51:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-01-20 17:51:35,245 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:51:35,245 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 17:51:35,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:51:35,458 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:51:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:51:35,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1871068833, now seen corresponding path program 31 times [2021-01-20 17:51:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:51:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499341247] [2021-01-20 17:51:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:51:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:51:37,929 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 17:51:37,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499341247] [2021-01-20 17:51:37,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754958137] [2021-01-20 17:51:37,930 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 17:51:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:51:38,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-20 17:51:38,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:51:38,162 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 17:51:38,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:51:38,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-01-20 17:51:38,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907096782] [2021-01-20 17:51:38,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-01-20 17:51:38,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:51:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-01-20 17:51:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2021-01-20 17:51:38,164 INFO L87 Difference]: Start difference. First operand 813 states and 1405 transitions. 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 17:51:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:51:42,643 INFO L93 Difference]: Finished difference Result 818 states and 1410 transitions. [2021-01-20 17:51:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-01-20 17:51:42,644 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 17:51:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:51:42,646 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2021-01-20 17:51:42,646 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1410 transitions. Word has length 187 [2021-01-20 17:51:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:51:42,646 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1410 transitions. [2021-01-20 17:51:42,646 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 17:51:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1410 transitions. [2021-01-20 17:51:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-20 17:51:42,648 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:51:42,648 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 17:51:42,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-20 17:51:42,861 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:51:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:51:42,861 INFO L82 PathProgramCache]: Analyzing trace with hash 292568565, now seen corresponding path program 32 times [2021-01-20 17:51:42,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:51:42,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666672331] [2021-01-20 17:51:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:51:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:51:45,501 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 17:51:45,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666672331] [2021-01-20 17:51:45,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987622052] [2021-01-20 17:51:45,502 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 17:51:45,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:51:45,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:51:45,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-20 17:51:45,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:51:45,815 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 17:51:45,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:51:45,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-01-20 17:51:45,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787830877] [2021-01-20 17:51:45,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-01-20 17:51:45,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:51:45,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-01-20 17:51:45,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 17:51:45,818 INFO L87 Difference]: Start difference. First operand 818 states and 1410 transitions. 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 17:51:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:51:50,608 INFO L93 Difference]: Finished difference Result 823 states and 1415 transitions. [2021-01-20 17:51:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-01-20 17:51:50,609 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 17:51:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:51:50,610 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2021-01-20 17:51:50,610 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1415 transitions. Word has length 192 [2021-01-20 17:51:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:51:50,611 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1415 transitions. [2021-01-20 17:51:50,611 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 17:51:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1415 transitions. [2021-01-20 17:51:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-01-20 17:51:50,612 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:51:50,612 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 17:51:50,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-20 17:51:50,816 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:51:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:51:50,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1394487071, now seen corresponding path program 33 times [2021-01-20 17:51:50,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:51:50,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115191581] [2021-01-20 17:51:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:51:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:51:53,659 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 17:51:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115191581] [2021-01-20 17:51:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401794295] [2021-01-20 17:51:53,660 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 17:52:22,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-01-20 17:52:22,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:52:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-20 17:52:23,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:52:23,409 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 17:52:23,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:52:23,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-01-20 17:52:23,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929793943] [2021-01-20 17:52:23,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-01-20 17:52:23,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:52:23,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-01-20 17:52:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2021-01-20 17:52:23,414 INFO L87 Difference]: Start difference. First operand 823 states and 1415 transitions. 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 17:52:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:52:28,178 INFO L93 Difference]: Finished difference Result 828 states and 1420 transitions. [2021-01-20 17:52:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-01-20 17:52:28,179 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 17:52:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:52:28,180 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5852, Invalid=12780, Unknown=0, NotChecked=0, Total=18632 [2021-01-20 17:52:28,180 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1420 transitions. Word has length 197 [2021-01-20 17:52:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:52:28,181 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1420 transitions. [2021-01-20 17:52:28,181 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 17:52:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1420 transitions. [2021-01-20 17:52:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-20 17:52:28,183 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:52:28,184 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 17:52:28,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-20 17:52:28,398 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:52:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:52:28,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1658165195, now seen corresponding path program 34 times [2021-01-20 17:52:28,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:52:28,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549798038] [2021-01-20 17:52:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:52:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:52:31,472 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 17:52:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549798038] [2021-01-20 17:52:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641097988] [2021-01-20 17:52:31,472 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 17:52:31,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:52:31,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:52:31,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-20 17:52:31,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:52:31,799 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 17:52:31,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:52:31,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-01-20 17:52:31,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458607821] [2021-01-20 17:52:31,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-01-20 17:52:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:52:31,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-01-20 17:52:31,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-01-20 17:52:31,802 INFO L87 Difference]: Start difference. First operand 828 states and 1420 transitions. 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 17:52:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:52:37,278 INFO L93 Difference]: Finished difference Result 833 states and 1425 transitions. [2021-01-20 17:52:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-01-20 17:52:37,279 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 17:52:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:52:37,280 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2021-01-20 17:52:37,280 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1425 transitions. Word has length 202 [2021-01-20 17:52:37,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:52:37,280 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1425 transitions. [2021-01-20 17:52:37,281 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 17:52:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1425 transitions. [2021-01-20 17:52:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-01-20 17:52:37,281 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:52:37,282 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 17:52:37,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-20 17:52:37,483 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:52:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:52:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 610561247, now seen corresponding path program 35 times [2021-01-20 17:52:37,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:52:37,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44900410] [2021-01-20 17:52:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:52:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:52:40,652 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 17:52:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44900410] [2021-01-20 17:52:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183728977] [2021-01-20 17:52:40,653 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 17:53:13,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-01-20 17:53:13,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:53:13,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-20 17:53:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:53:13,815 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 17:53:13,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:53:13,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-01-20 17:53:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597687752] [2021-01-20 17:53:13,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-01-20 17:53:13,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:53:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-01-20 17:53:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2021-01-20 17:53:13,818 INFO L87 Difference]: Start difference. First operand 833 states and 1425 transitions. 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 17:53:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:53:19,215 INFO L93 Difference]: Finished difference Result 838 states and 1430 transitions. [2021-01-20 17:53:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-01-20 17:53:19,216 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 17:53:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:53:19,217 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6556, Invalid=14324, Unknown=0, NotChecked=0, Total=20880 [2021-01-20 17:53:19,217 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1430 transitions. Word has length 207 [2021-01-20 17:53:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:53:19,217 INFO L481 AbstractCegarLoop]: Abstraction has 838 states and 1430 transitions. [2021-01-20 17:53:19,218 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 17:53:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1430 transitions. [2021-01-20 17:53:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-01-20 17:53:19,218 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:53:19,219 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 17:53:19,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-20 17:53:19,420 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:53:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:53:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash 115655285, now seen corresponding path program 36 times [2021-01-20 17:53:19,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:53:19,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80146624] [2021-01-20 17:53:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:53:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:53:22,689 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 17:53:22,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80146624] [2021-01-20 17:53:22,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341430401] [2021-01-20 17:53:22,689 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 17:54:07,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-01-20 17:54:07,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:54:07,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-20 17:54:07,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:54:07,799 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 17:54:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:54:07,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-01-20 17:54:07,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738307462] [2021-01-20 17:54:07,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-01-20 17:54:07,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:54:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-01-20 17:54:07,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2021-01-20 17:54:07,815 INFO L87 Difference]: Start difference. First operand 838 states and 1430 transitions. 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 17:54:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:54:13,732 INFO L93 Difference]: Finished difference Result 843 states and 1435 transitions. [2021-01-20 17:54:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-01-20 17:54:13,733 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 17:54:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:54:13,735 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=6923, Invalid=15129, Unknown=0, NotChecked=0, Total=22052 [2021-01-20 17:54:13,735 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1435 transitions. Word has length 212 [2021-01-20 17:54:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:54:13,735 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1435 transitions. [2021-01-20 17:54:13,735 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 17:54:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1435 transitions. [2021-01-20 17:54:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-01-20 17:54:13,736 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:54:13,737 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 17:54:13,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-20 17:54:13,938 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:54:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:54:13,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1068991841, now seen corresponding path program 37 times [2021-01-20 17:54:13,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:54:13,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156045302] [2021-01-20 17:54:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:54:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:54:17,532 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 17:54:17,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156045302] [2021-01-20 17:54:17,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474715628] [2021-01-20 17:54:17,533 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 17:54:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:54:17,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2021-01-20 17:54:17,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:54:17,861 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 17:54:17,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:54:17,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-01-20 17:54:17,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630255906] [2021-01-20 17:54:17,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-01-20 17:54:17,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:54:17,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-01-20 17:54:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2021-01-20 17:54:17,864 INFO L87 Difference]: Start difference. First operand 843 states and 1435 transitions. 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 17:54:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:54:23,535 INFO L93 Difference]: Finished difference Result 848 states and 1440 transitions. [2021-01-20 17:54:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-01-20 17:54:23,535 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 17:54:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:54:23,537 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2021-01-20 17:54:23,538 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1440 transitions. Word has length 217 [2021-01-20 17:54:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:54:23,538 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1440 transitions. [2021-01-20 17:54:23,538 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 17:54:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1440 transitions. [2021-01-20 17:54:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-01-20 17:54:23,540 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:54:23,540 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 17:54:23,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-20 17:54:23,754 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:54:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:54:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1339863883, now seen corresponding path program 38 times [2021-01-20 17:54:23,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:54:23,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033358216] [2021-01-20 17:54:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:54:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:54:27,579 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 17:54:27,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033358216] [2021-01-20 17:54:27,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230197567] [2021-01-20 17:54:27,580 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 17:54:27,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 17:54:27,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:54:27,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-20 17:54:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:54:27,861 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 17:54:27,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:54:27,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-01-20 17:54:27,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190123431] [2021-01-20 17:54:27,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-01-20 17:54:27,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:54:27,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-01-20 17:54:27,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2021-01-20 17:54:27,864 INFO L87 Difference]: Start difference. First operand 848 states and 1440 transitions. 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 17:54:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:54:34,433 INFO L93 Difference]: Finished difference Result 853 states and 1445 transitions. [2021-01-20 17:54:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-01-20 17:54:34,434 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 17:54:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:54:34,436 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2021-01-20 17:54:34,436 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1445 transitions. Word has length 222 [2021-01-20 17:54:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:54:34,436 INFO L481 AbstractCegarLoop]: Abstraction has 853 states and 1445 transitions. [2021-01-20 17:54:34,436 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 17:54:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1445 transitions. [2021-01-20 17:54:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-01-20 17:54:34,437 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:54:34,438 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 17:54:34,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-20 17:54:34,646 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:54:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:54:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash 398874719, now seen corresponding path program 39 times [2021-01-20 17:54:34,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:54:34,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025562134] [2021-01-20 17:54:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:54:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:54:38,737 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 17:54:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025562134] [2021-01-20 17:54:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59650181] [2021-01-20 17:54:38,738 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 17:55:11,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-01-20 17:55:11,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:55:11,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-20 17:55:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:55:11,705 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 17:55:11,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:55:11,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-01-20 17:55:11,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586324608] [2021-01-20 17:55:11,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-01-20 17:55:11,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:55:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-01-20 17:55:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2021-01-20 17:55:11,710 INFO L87 Difference]: Start difference. First operand 853 states and 1445 transitions. 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 17:55:18,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:55:18,521 INFO L93 Difference]: Finished difference Result 858 states and 1450 transitions. [2021-01-20 17:55:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-01-20 17:55:18,522 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 17:55:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:55:18,524 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=8084, Invalid=17676, Unknown=0, NotChecked=0, Total=25760 [2021-01-20 17:55:18,524 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1450 transitions. Word has length 227 [2021-01-20 17:55:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:55:18,524 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1450 transitions. [2021-01-20 17:55:18,524 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 17:55:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1450 transitions. [2021-01-20 17:55:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-20 17:55:18,526 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:55:18,526 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 17:55:18,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:55:18,739 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:55:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:55:18,740 INFO L82 PathProgramCache]: Analyzing trace with hash -446036235, now seen corresponding path program 40 times [2021-01-20 17:55:18,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:55:18,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013960192] [2021-01-20 17:55:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:55:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:55:23,270 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 17:55:23,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013960192] [2021-01-20 17:55:23,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044528586] [2021-01-20 17:55:23,271 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 17:55:23,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 17:55:23,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:55:23,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-20 17:55:23,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:55:23,617 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 17:55:23,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:55:23,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-01-20 17:55:23,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828595762] [2021-01-20 17:55:23,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-01-20 17:55:23,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:55:23,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-01-20 17:55:23,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2021-01-20 17:55:23,621 INFO L87 Difference]: Start difference. First operand 858 states and 1450 transitions. 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 17:55:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:55:30,886 INFO L93 Difference]: Finished difference Result 863 states and 1455 transitions. [2021-01-20 17:55:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-01-20 17:55:30,887 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 17:55:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:55:30,888 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=8491, Invalid=18569, Unknown=0, NotChecked=0, Total=27060 [2021-01-20 17:55:30,888 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1455 transitions. Word has length 232 [2021-01-20 17:55:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:55:30,889 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 1455 transitions. [2021-01-20 17:55:30,889 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 17:55:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1455 transitions. [2021-01-20 17:55:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-01-20 17:55:30,890 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:55:30,890 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 17:55:31,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 17:55:31,105 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:55:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:55:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash 282723871, now seen corresponding path program 41 times [2021-01-20 17:55:31,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:55:31,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539493362] [2021-01-20 17:55:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:55:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:55:35,936 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 17:55:35,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539493362] [2021-01-20 17:55:35,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42030201] [2021-01-20 17:55:35,936 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 17:58:17,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-01-20 17:58:17,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 17:58:21,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-20 17:58:21,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 17:58:21,572 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 17:58:21,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 17:58:21,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-01-20 17:58:21,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800553690] [2021-01-20 17:58:21,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-01-20 17:58:21,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 17:58:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-01-20 17:58:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2021-01-20 17:58:21,578 INFO L87 Difference]: Start difference. First operand 863 states and 1455 transitions. 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 17:58:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 17:58:30,167 INFO L93 Difference]: Finished difference Result 868 states and 1460 transitions. [2021-01-20 17:58:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-01-20 17:58:30,169 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 17:58:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 17:58:30,172 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=8908, Invalid=19484, Unknown=0, NotChecked=0, Total=28392 [2021-01-20 17:58:30,172 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1460 transitions. Word has length 237 [2021-01-20 17:58:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 17:58:30,172 INFO L481 AbstractCegarLoop]: Abstraction has 868 states and 1460 transitions. [2021-01-20 17:58:30,172 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 17:58:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1460 transitions. [2021-01-20 17:58:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-01-20 17:58:30,174 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 17:58:30,174 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 17:58:30,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-20 17:58:30,390 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-20 17:58:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 17:58:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash 507310389, now seen corresponding path program 42 times [2021-01-20 17:58:30,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 17:58:30,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121557508] [2021-01-20 17:58:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 17:58:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 17:58:36,052 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 17:58:36,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121557508] [2021-01-20 17:58:36,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814947677] [2021-01-20 17:58:36,053 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